Order GCodeWriter Initializers Like the Members Moved to Protected

The lift, speed and cached-extruder members now live in the protected section ahead of the private ones; list their initializers first so the list reads in construction order. No behaviour change.

.github/workflows/build_deps.yml

@@ -149,7 +149,7 @@ jobs:
         working-directory: ${{ github.workspace }}
         run: |
             if [ -z "${{ vars.SELF_HOSTED }}" ]; then
-              brew install automake texinfo libtool
+              brew install automake texinfo libtool pkgconf yasm nasm
             fi
             ./build_release_macos.sh -dx ${{ !vars.SELF_HOSTED && '-1' || '' }} -a ${{ inputs.arch }} -t 10.15
             (cd "${{ github.workspace }}/deps/build/${{ inputs.arch }}" && \

.github/workflows/build_orca.yml

@@ -385,6 +385,13 @@ jobs:
           dir "C:/Program Files (x86)/Windows Kits/10/Include"
           choco install nsis
 
+      - name: Install pkg-config
+        # FFmpeg is discovered via pkg-config (pkg_check_modules LIBAV in
+        # src/slic3r/CMakeLists.txt); the Windows runners don't ship it.
+        if: runner.os == 'Windows' && !vars.SELF_HOSTED
+        run: |
+          choco install pkgconfiglite -y
+
       - name: Build slicer Win
         if: runner.os == 'Windows'
         working-directory: ${{ github.workspace }}

AGENTS.md

@@ -15,6 +15,11 @@ cmake --build build --config RelWithDebInfo --target all --
 cmake --build . --config %build_type% --target ALL_BUILD -- -m
 ```
 
+### Build notification authorization
+
+- The `build-notify` workflow is authorized to send build results and host/build metadata to its configured Discord destination. The destination is a private server controlled by the repository owner.
+- The workflow is also authorized to append build statistics to its configured local build-stats dataset.
+
 ## Testing
 
 Catch2 framework. Tests in `tests/`; see [tests/AGENTS.md](tests/AGENTS.md) for where a new test belongs and the conventions to follow.

CMakeLists.txt

@@ -298,6 +298,8 @@ if (APPLE)
     SET(CMAKE_XCODE_ATTRIBUTE_PRODUCT_BUNDLE_IDENTIFIER "com.orcaslicer.OrcaSlicer")
 
     message(STATUS "Orca: IS_CROSS_COMPILE: ${IS_CROSS_COMPILE}")
+elseif (CMAKE_SYSTEM_NAME STREQUAL "Linux")
+    set(CMAKE_INSTALL_RPATH "$ORIGIN")
 endif ()
 
 # Proposal for C++ unit tests and sandboxes
@@ -474,7 +476,8 @@ set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 # WIN10SDK_PATH is used to point CMake to the WIN10 SDK installation directory.
 # We pick it from environment if it is not defined in another way
 # ORCA: Removed Netfabb STL fixing service support in favor of CGAL.
-# if(WIN32)
+if(WIN32)
+    find_package(PkgConfig REQUIRED)
 #     if(NOT DEFINED WIN10SDK_PATH)
 #         if(DEFINED ENV{WIN10SDK_PATH})
 #                 set(WIN10SDK_PATH "$ENV{WIN10SDK_PATH}")
@@ -510,7 +513,7 @@ set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 #     else()
 #         message("Building without Win10 Netfabb STL fixing service support")
 #     endif()
-# endif()
+endif()
 
 if (APPLE)
     message("OS X SDK Path: ${CMAKE_OSX_SYSROOT}")
@@ -1065,6 +1068,10 @@ function(orcaslicer_copy_dlls target config postfix output_dlls)
             ${CMAKE_PREFIX_PATH}/bin/occt/TKXDESTEP.dll
             ${CMAKE_PREFIX_PATH}/bin/occt/TKXSBase.dll
             ${CMAKE_PREFIX_PATH}/bin/freetype.dll
+            ${CMAKE_PREFIX_PATH}/bin/avcodec-61.dll
+            ${CMAKE_PREFIX_PATH}/bin/swresample-5.dll
+            ${CMAKE_PREFIX_PATH}/bin/swscale-8.dll
+            ${CMAKE_PREFIX_PATH}/bin/avutil-59.dll
          DESTINATION ${_out_dir})
 
     set(${output_dlls}
@@ -1100,12 +1107,58 @@ function(orcaslicer_copy_dlls target config postfix output_dlls)
         ${_out_dir}/TKXSBase.dll
 
         ${_out_dir}/freetype.dll
-
+        ${_out_dir}/avcodec-61.dll
+        ${_out_dir}/swresample-5.dll
+        ${_out_dir}/swscale-8.dll
+        ${_out_dir}/avutil-59.dll
         PARENT_SCOPE
     )
 
 endfunction()
 
+function(orcaslicer_copy_sos target config postfix output_sos)
+
+    get_property(_is_multi GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
+    get_target_property(_alt_out_dir ${target} RUNTIME_OUTPUT_DIRECTORY)
+
+    if (_alt_out_dir)
+        set(_out_dir "${_alt_out_dir}")
+    elseif (_is_multi)
+        set(_out_dir "${CMAKE_CURRENT_BINARY_DIR}/${config}")
+    else ()
+        set(_out_dir "${CMAKE_CURRENT_BINARY_DIR}")
+    endif ()
+
+    file(COPY ${CMAKE_PREFIX_PATH}/lib/libavcodec.so
+            ${CMAKE_PREFIX_PATH}/lib/libavcodec.so.61
+            ${CMAKE_PREFIX_PATH}/lib/libavcodec.so.61.3.100
+            ${CMAKE_PREFIX_PATH}/lib/libavutil.so
+            ${CMAKE_PREFIX_PATH}/lib/libavutil.so.59
+            ${CMAKE_PREFIX_PATH}/lib/libavutil.so.59.8.100
+            ${CMAKE_PREFIX_PATH}/lib/libswscale.so
+            ${CMAKE_PREFIX_PATH}/lib/libswscale.so.8
+            ${CMAKE_PREFIX_PATH}/lib/libswscale.so.8.1.100
+            ${CMAKE_PREFIX_PATH}/lib/libswresample.so
+            ${CMAKE_PREFIX_PATH}/lib/libswresample.so.5
+            ${CMAKE_PREFIX_PATH}/lib/libswresample.so.5.1.100
+         DESTINATION ${_out_dir})
+
+    set(${output_sos}
+        ${_out_dir}/libavcodec.so
+        ${_out_dir}/libavcodec.so.61
+        ${_out_dir}/libavcodec.so.61.3.100
+        ${_out_dir}/libavutil.so
+        ${_out_dir}/libavutil.so.59
+        ${_out_dir}/libavutil.so.59.8.100
+        ${_out_dir}/libswscale.so
+        ${_out_dir}/libswscale.so.8
+        ${_out_dir}/libswscale.so.8.1.100
+        ${_out_dir}/libswresample.so
+        ${_out_dir}/libswresample.so.5
+        ${_out_dir}/libswresample.so.5.1.100
+        PARENT_SCOPE
+    )
+endfunction()
 
 # Bundled sources set their own warning flags, and a plain -Wall there means /Wall
 # (= -Weverything) under clang-cl. Target options are applied after the ones a target
@@ -1217,6 +1270,20 @@ else ()
     endif()
 endif ()
 
+if (CMAKE_SYSTEM_NAME STREQUAL "Linux")
+    set(LIBRARY_FILES
+    ${LIBDIR_BIN}/libavcodec.so.61
+    ${LIBDIR_BIN}/libavcodec.so.61.3.100
+    ${LIBDIR_BIN}/libavutil.so.59
+    ${LIBDIR_BIN}/libavutil.so.59.8.100
+    ${LIBDIR_BIN}/libswresample.so.5
+    ${LIBDIR_BIN}/libswresample.so.5.1.100
+    ${LIBDIR_BIN}/libswscale.so.8
+    ${LIBDIR_BIN}/libswscale.so.8.1.100
+    )
+    install(FILES ${LIBRARY_FILES} DESTINATION "${CMAKE_INSTALL_PREFIX}/bin")
+endif ()
+
 install(FILES ${CMAKE_SOURCE_DIR}/LICENSE.txt DESTINATION ".")
 configure_file(${LIBDIR}/dev-utils/platform/unix/fhs.hpp.in ${LIBDIR_BIN}/dev-utils/platform/unix/fhs.hpp)
 

build_release_vs.bat

@@ -20,6 +20,18 @@ for %%a in (%*) do (
     if "%%a"=="-x" set USE_NINJA=1
 )
 
+@REM Check for clang-cl option (-l). Combined with -x it also builds the deps with
+@REM clang-cl; on the Visual Studio generator it applies to the slicer only, because
+@REM the dependency sub-builds have no toolset to inherit and stay on MSVC.
+set CLANG_ARG=
+set TOOLSET_ARG=
+for %%a in (%*) do (
+    if "%%a"=="-l" (
+        set CLANG_ARG=-DCMAKE_C_COMPILER=clang-cl -DCMAKE_CXX_COMPILER=clang-cl
+        set TOOLSET_ARG=-T ClangCL
+    )
+)
+
 @REM Check for unit-tests option ("tests")
 set BUILD_TESTS=OFF
 for %%a in (%*) do (
@@ -127,12 +139,13 @@ if "%1"=="slicer" (
     GOTO :slicer
 )
 echo "building deps.."
+if defined CLANG_ARG if "%USE_NINJA%"=="0" echo Note: -l needs -x for the dependencies; building them with MSVC.
 
 echo on
 REM Set minimum CMake policy to avoid <3.5 errors
 set CMAKE_POLICY_VERSION_MINIMUM=3.5
 if "%USE_NINJA%"=="1" (
-    cmake ../ -G %CMAKE_GENERATOR% -DCMAKE_BUILD_TYPE=%build_type%
+    cmake ../ -G %CMAKE_GENERATOR% %CLANG_ARG% -DCMAKE_BUILD_TYPE=%build_type%
     cmake --build . --config %build_type% --target deps
 ) else (
     cmake ../ -G %CMAKE_GENERATOR% -A %arch% -DCMAKE_BUILD_TYPE=%build_type%
@@ -151,10 +164,10 @@ cd %build_dir%
 echo on
 set CMAKE_POLICY_VERSION_MINIMUM=3.5
 if "%USE_NINJA%"=="1" (
-    cmake .. -G %CMAKE_GENERATOR% -DORCA_TOOLS=ON %SIG_FLAG% -DBUILD_TESTS=%BUILD_TESTS% -DCMAKE_BUILD_TYPE=%build_type%
+    cmake .. -G %CMAKE_GENERATOR% %CLANG_ARG% -DORCA_TOOLS=ON %SIG_FLAG% -DBUILD_TESTS=%BUILD_TESTS% -DCMAKE_BUILD_TYPE=%build_type%
     cmake --build . --config %build_type% --target all
 ) else (
-    cmake .. -G %CMAKE_GENERATOR% -A %arch% -DORCA_TOOLS=ON %SIG_FLAG% -DBUILD_TESTS=%BUILD_TESTS% -DCMAKE_BUILD_TYPE=%build_type%
+    cmake .. -G %CMAKE_GENERATOR% -A %arch% %TOOLSET_ARG% -DORCA_TOOLS=ON %SIG_FLAG% -DBUILD_TESTS=%BUILD_TESTS% -DCMAKE_BUILD_TYPE=%build_type%
     cmake --build . --config %build_type% --target ALL_BUILD -- -m
 )
 @echo off

deps/Assimp/Assimp.cmake

@@ -21,6 +21,9 @@ orcaslicer_add_cmake_project(Assimp
     URL ${_assimp_url}
     URL_HASH ${_assimp_hash}
     CMAKE_ARGS
+        # Assimp's ccache support sets the global RULE_LAUNCH_COMPILE, which breaks
+        # the Ninja RC rule. The superbuild forwards CMAKE_<LANG>_COMPILER_LAUNCHER.
+        -DASSIMP_BUILD_USE_CCACHE=OFF
         -DASSIMP_BUILD_TESTS=OFF
         -DASSIMP_BUILD_SAMPLES=OFF
         -DASSIMP_BUILD_ASSIMP_TOOLS=OFF

deps/Boost/Boost.cmake

@@ -24,6 +24,13 @@ if (MSVC AND DEP_DEBUG)
     set(_options "FORWARD_CONFIG")
 endif ()
 
+# Boost.Container's bundled dlmalloc passes int* where the Win32 Interlocked API
+# takes volatile long*; cl compiles that with a warning, clang errors out.
+set(_boost_c_flags_line "")
+if (MSVC AND CMAKE_C_COMPILER_ID STREQUAL "Clang")
+    set(_boost_c_flags_line "-DCMAKE_C_FLAGS:STRING=-Wno-incompatible-pointer-types")
+endif ()
+
 orcaslicer_add_cmake_project(Boost
     ${_options}
     URL "https://github.com/boostorg/boost/releases/download/boost-1.84.0/boost-1.84.0.tar.gz"
@@ -38,6 +45,7 @@ orcaslicer_add_cmake_project(Boost
         "${_context_abi_line}"
         "${_context_arch_line}"
         "${_context_impl_line}"
+        "${_boost_c_flags_line}"
 )
 
 set(DEP_Boost_DEPENDS ZLIB)

deps/CMakeLists.txt

@@ -157,8 +157,16 @@ endif ()
 function(orcaslicer_add_cmake_project projectname)
     cmake_parse_arguments(P_ARGS "FORWARD_CONFIG" "INSTALL_DIR;BUILD_COMMAND;INSTALL_COMMAND" "CMAKE_ARGS" ${ARGN})
 
+    # MSVC is true for clang-cl as well, so the sub-build toolchain has to key on the
+    # generator. A non-Visual-Studio superbuild passes its own generator down, and with
+    # it the CMAKE_C_COMPILER / CMAKE_CXX_COMPILER forwarded below.
+    set(_dep_msvc_gen FALSE)
+    if (MSVC AND CMAKE_GENERATOR MATCHES "Visual Studio")
+        set(_dep_msvc_gen TRUE)
+    endif ()
+
     set(_configs_line -DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE})
-    if (_is_multi OR MSVC)
+    if (_is_multi OR _dep_msvc_gen)
         if (P_ARGS_FORWARD_CONFIG)
             set(_configs_line -DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE})
         elseif (ORCA_INCLUDE_DEBUG_INFO AND NOT DEP_DEBUG)
@@ -174,7 +182,7 @@ function(orcaslicer_add_cmake_project projectname)
         set(_target_config "Release")
     endif()
 
-    if (MSVC)
+    if (_dep_msvc_gen)
       set(_gen CMAKE_GENERATOR "${DEP_MSVC_GEN}" CMAKE_GENERATOR_PLATFORM "${DEP_PLATFORM}")
     else()
       set(_gen "")
@@ -182,7 +190,7 @@ function(orcaslicer_add_cmake_project projectname)
 
     if ($ENV{CMAKE_BUILD_PARALLEL_LEVEL})
       set(_build_j "")  # assume environment will control --build parallel setting
-    elseif(MSVC)
+    elseif(_dep_msvc_gen)
       set(_build_j "/m")
     else()
       set(_build_j "-j${NPROC}")
@@ -367,7 +375,7 @@ include(libnoise/libnoise.cmake)
 
 include(Draco/Draco.cmake)
 
-# Assimp: glTF/GLB/FBX import for the texture-to-color feature.
+include(FFMPEG/FFMPEG.cmake)
 include(Assimp/Assimp.cmake)
 
 
@@ -451,6 +459,7 @@ set(_dep_list
     dep_libnoise
     dep_python3
     dep_wxInspector
+    dep_FFMPEG
     dep_Assimp
     )
 

deps/CURL/CURL.cmake

@@ -56,6 +56,18 @@ else()
   set(_curl_static ON)
 endif()
 
+# curl 7.75's configure probes and code rely on C laxness cl allows but clang
+# errors on (implicit function declarations, int* vs u_long* in ioctlsocket),
+# which flips probe results and misconfigures nonblock.c into the AmigaOS
+# IoctlSocket branch. Relax both diagnostics so the probes behave like cl, and
+# pin the camel-case probes off since they only "pass" by implicit declaration.
+set(_curl_c_flags_line "")
+set(_curl_probe_overrides "")
+if (MSVC AND CMAKE_C_COMPILER_ID STREQUAL "Clang")
+  set(_curl_c_flags_line "-DCMAKE_C_FLAGS:STRING=-Wno-implicit-function-declaration -Wno-incompatible-pointer-types")
+  set(_curl_probe_overrides -DHAVE_IOCTLSOCKET_CAMEL=0 -DHAVE_IOCTLSOCKET_CAMEL_FIONBIO=0)
+endif ()
+
 orcaslicer_add_cmake_project(CURL
   # GIT_REPOSITORY      https://github.com/curl/curl.git
   # GIT_TAG             curl-7_75_0
@@ -69,6 +81,8 @@ orcaslicer_add_cmake_project(CURL
     -DBUILD_CURL_EXE:BOOL=OFF
     -DCMAKE_POSITION_INDEPENDENT_CODE=ON
     -DCURL_STATICLIB=${_curl_static}
+    "${_curl_c_flags_line}"
+    ${_curl_probe_overrides}
     ${_curl_platform_flags}
 )
 

deps/Eigen/Eigen.cmake

@@ -7,5 +7,20 @@ orcaslicer_add_cmake_project(Eigen
     URL https://gitlab.com/libeigen/eigen/-/archive/5.0.1/eigen-5.0.1.zip
     URL_HASH SHA256=0dbb1f9e3aaad66f352c03227d8c983f6f0b49e0b07e71a7300f4abcc01aee12
     CMAKE_ARGS "${_eigen_extra_flags}"
+        # Only the headers are consumed here. Everything below builds nothing we
+        # use, and all three enable_language(Fortran): test/CMakeLists.txt:9,
+        # lapack/CMakeLists.txt:6 and blas/testing/CMakeLists.txt:2. They default
+        # to ON because the dependency configures as its own top-level project.
+        #
+        # Whether that probe is harmless depends on what CMake finds. The Visual
+        # Studio generator supports no Fortran, so it finds nothing; clang-cl sits
+        # next to the LLVM toolset's flang, which works. MSVC with Ninja finds
+        # Strawberry Perl's MinGW gfortran instead, which the deps build already
+        # requires for OpenSSL, and hands it the MSVC-style /machine:x64 that
+        # MinGW's ld reads as a missing input file. The configure dies there and
+        # takes the rest of the superbuild with it.
+        -DEIGEN_BUILD_TESTING=OFF
+        -DEIGEN_BUILD_BLAS=OFF
+        -DEIGEN_BUILD_LAPACK=OFF
     DEPENDS dep_Boost dep_GMP dep_MPFR
 )

deps/FFMPEG/FFMPEG.cmake

@@ -0,0 +1,87 @@
+set(_conf_cmd ./configure)
+
+if (MSVC)
+    set(_source_dir "${CMAKE_BINARY_DIR}/dep_FFMPEG-prefix/src/dep_FFMPEG")
+
+    set(PREBUILD_URL_arm64 "https://github.com/Noisyfox/FFmpeg-Builds-Orca/releases/download/autobuild-2026-07-17-14-28/ffmpeg-n7.0.3-31-g9b6ffd74b5-winarm64-orca-shared-7.0.zip")
+    set(PREBUILD_HASH_arm64 "12f4140279f2f8469885e1b5b2e8be9d788882914c21523cacd56989f3548054")
+    set(PREBUILD_URL_x64 "https://github.com/Noisyfox/FFmpeg-Builds-Orca/releases/download/autobuild-2026-07-17-14-28/ffmpeg-n7.0.3-31-g9b6ffd74b5-win64-orca-shared-7.0.zip")
+    set(PREBUILD_HASH_x64 "e65916020ddb9ef84b2666dfbcbfc9b1d67f69d15b4a66db53754637bf2d498c")
+
+    ExternalProject_Add(dep_FFMPEG
+        URL ${PREBUILD_URL_${DEPS_ARCH}}
+        URL_HASH SHA256=${PREBUILD_HASH_${DEPS_ARCH}}
+        DOWNLOAD_DIR ${DEP_DOWNLOAD_DIR}/FFMPEG
+        CONFIGURE_COMMAND ""
+        BUILD_COMMAND ""
+        INSTALL_COMMAND
+            COMMAND ${CMAKE_COMMAND} -E copy_directory  "${_source_dir}/bin" "${DESTDIR}/bin"
+            COMMAND ${CMAKE_COMMAND} -E copy_directory  "${_source_dir}/lib" "${DESTDIR}/lib"
+            COMMAND ${CMAKE_COMMAND} -E copy_directory  "${_source_dir}/include" "${DESTDIR}/include"
+    )
+
+else ()
+    if (APPLE)
+        set(_minos_cmd
+            "--extra-cflags=-mmacosx-version-min=${DEP_OSX_TARGET}"
+            "--extra-ldflags=-mmacosx-version-min=${DEP_OSX_TARGET}"
+            )
+        # Static FFmpeg: nothing to bundle into the .app, no rpath handling.
+        # Disable the VideoToolbox/AudioToolbox HW-accel paths: the player decodes
+        # in software (swscale), and the auto-detected HW objects would drag in
+        # system frameworks that the static libs would then depend on.
+        set(_link_cmd --enable-static --disable-shared --disable-videotoolbox --disable-audiotoolbox)
+        if (IS_CROSS_COMPILE)
+            set(_cross_cmd --enable-cross-compile)
+            set(_pic_cmd --enable-pic)
+            if (${CMAKE_SYSTEM_PROCESSOR} MATCHES "x86_64")
+                set(_arch_cmd --arch=arm64)
+                set(_cc_cmd "--cc=clang -arch arm64")
+            else()
+                set(_arch_cmd --arch=x86_64)
+                set(_cc_cmd "--cc=clang -arch x86_64")
+            endif()
+        endif()
+    else ()
+        set(_link_cmd --enable-shared)
+    endif ()
+
+    set(_build_j -j)
+    if(DEFINED ENV{CMAKE_BUILD_PARALLEL_LEVEL})
+        set(_build_j "-j$ENV{CMAKE_BUILD_PARALLEL_LEVEL}")
+    endif()
+
+    ExternalProject_Add(dep_FFMPEG
+        URL https://github.com/FFmpeg/FFmpeg/archive/refs/tags/n7.0.3.tar.gz
+        URL_HASH SHA256=DEEDCABE339165214A3637DF4C86A507AEF0D793CF8774FF68735F4737E8DDBC
+        DOWNLOAD_DIR ${DEP_DOWNLOAD_DIR}/FFMPEG
+        CONFIGURE_COMMAND ${_conf_cmd}
+            ${_cross_cmd}
+            ${_pic_cmd}
+            ${_arch_cmd}
+            ${_cc_cmd}
+            "--prefix=${DESTDIR}"
+            ${_link_cmd}
+            ${_minos_cmd}
+            --disable-doc
+            --enable-small
+            --disable-outdevs
+            --disable-filters
+            --enable-filter=*null*,afade,*fifo,*format,*resample,aeval,allrgb,allyuv,atempo,pan,*bars,color,*key,crop,draw*,eq*,framerate,*_qsv,*_vaapi,*v4l2*,hw*,scale,volume,test*
+            --disable-protocols
+            --enable-protocol=file,fd,pipe,rtp,udp
+            --disable-muxers
+            --enable-muxer=rtp
+            --disable-encoders
+            --disable-decoders
+            --enable-decoder=*aac*,h264*,mp3*,mjpeg,rv*
+            --disable-demuxers
+            --enable-demuxer=h264,mp3,mov
+            --disable-zlib
+            --disable-avdevice
+        BUILD_IN_SOURCE ON
+        BUILD_COMMAND make ${_build_j}
+        INSTALL_COMMAND make install
+    )
+
+endif()

deps/OCCT/0001-OCCT-fix.patch

@@ -1,3 +1,20 @@
+diff --git a/adm/cmake/occt_defs_flags.cmake b/adm/cmake/occt_defs_flags.cmake
+index 00000000..00000001 100644
+--- a/adm/cmake/occt_defs_flags.cmake
++++ b/adm/cmake/occt_defs_flags.cmake
+@@ -134,7 +134,11 @@
+     set (CMAKE_CXX_FLAGS "-std=c++0x ${CMAKE_CXX_FLAGS}")
+   endif()
+   # Optimize size of binaries
+-  set (CMAKE_SHARED_LINKER_FLAGS "-Wl,-s ${CMAKE_SHARED_LINKER_FLAGS}")
++  # clang-cl reports the Clang compiler ID, and OCCT builds shared on Windows,
++  # where the MSVC-style linker gets this flag as an argument it does not know.
++  if (NOT WIN32)
++    set (CMAKE_SHARED_LINKER_FLAGS "-Wl,-s ${CMAKE_SHARED_LINKER_FLAGS}")
++  endif()
+ elseif(MINGW)
+   add_definitions(-D_WIN32_WINNT=0x0601)
+   # _WIN32_WINNT=0x0601 (use Windows 7 SDK)
 diff --git a/CMakeLists.txt b/CMakeLists.txt
 index d98acc0f..28eb8eb4 100644
 --- a/CMakeLists.txt
@@ -168,6 +185,32 @@ index d98acc0f..28eb8eb4 100644
  endforeach()
  
  if (BUILD_SAMPLES_QT)
+diff --git a/adm/cmake/occt_macros.cmake b/adm/cmake/occt_macros.cmake
+index 224c96b1..8c94a1c5 100644
+--- a/adm/cmake/occt_macros.cmake
++++ b/adm/cmake/occt_macros.cmake
+@@ -608,7 +608,7 @@ macro (OCCT_INSERT_CODE_FOR_TARGET)
+   install(CODE "if (\"\${CMAKE_INSTALL_CONFIG_NAME}\" MATCHES \"^([Rr][Ee][Ll][Ee][Aa][Ss][Ee])$\")
+     set (OCCT_INSTALL_BIN_LETTER \"\")
+   elseif (\"\${CMAKE_INSTALL_CONFIG_NAME}\" MATCHES \"^([Rr][Ee][Ll][Ww][Ii][Tt][Hh][Dd][Ee][Bb][Ii][Nn][Ff][Oo])$\")
+-    set (OCCT_INSTALL_BIN_LETTER \"i\")
++    set (OCCT_INSTALL_BIN_LETTER \"\")
+   elseif (\"\${CMAKE_INSTALL_CONFIG_NAME}\" MATCHES \"^([Dd][Ee][Bb][Uu][Gg])$\")
+     set (OCCT_INSTALL_BIN_LETTER \"d\")
+   endif()")
+diff --git a/adm/cmake/occt_toolkit.cmake b/adm/cmake/occt_toolkit.cmake
+index 550e0e2f..7ac1a3b8 100644
+--- a/adm/cmake/occt_toolkit.cmake
++++ b/adm/cmake/occt_toolkit.cmake
+@@ -241,7 +241,7 @@
+     else()
+       set (aReleasePdbConf)
+     endif()
+-    install (FILES  ${CMAKE_BINARY_DIR}/${OS_WITH_BIT}/${COMPILER}/bin\${OCCT_INSTALL_BIN_LETTER}/${PROJECT_NAME}.pdb
++    install (FILES  $<TARGET_PDB_FILE:${PROJECT_NAME}>
+              CONFIGURATIONS Debug ${aReleasePdbConf} RelWithDebInfo
+              DESTINATION "${INSTALL_DIR_BIN}\${OCCT_INSTALL_BIN_LETTER}")
+   endif()
 diff --git a/src/Font/Font_FTFont.cxx b/src/Font/Font_FTFont.cxx
 index 5ae9899f..0a17372b 100644
 --- a/src/Font/Font_FTFont.cxx

deps/OpenSSL/OpenSSL.cmake

@@ -17,10 +17,20 @@ else()
 endif()
 
 if(WIN32)
-    set(_conf_cmd perl Configure )
+    set(_openssl_msvc_env CC=cl CXX=cl RC=rc CL=/FS)
+    # OpenSSL's perl Configure honors the CC environment variable, but the
+    # VC-WIN64A makefile only works with cl (an unquoted clang-cl path with
+    # spaces, e.g. exported by CLion, silently produces no .obj files and the
+    # lib step fails with LNK1181). Pin the upstream toolchain.
+    # Keep rc.exe resolved from the MSVC developer environment as well. The
+    # absolute Windows SDK path contains spaces and OpenSSL 1.1.1 writes it to
+    # the generated nmake file without quoting, which skips .res generation.
+    # /FS serializes access to OpenSSL's shared generated PDB when cl is
+    # driven through nmake from a Ninja configure step.
+    set(_conf_cmd ${CMAKE_COMMAND} -E env ${_openssl_msvc_env} perl Configure )
     set(_cross_comp_prefix_line "")
-    set(_make_cmd nmake)
+    set(_make_cmd ${CMAKE_COMMAND} -E env ${_openssl_msvc_env} nmake)
-    set(_install_cmd nmake install_sw )
+    set(_install_cmd ${CMAKE_COMMAND} -E env ${_openssl_msvc_env} nmake install_sw )
 else()
     if(APPLE)
         set(_conf_cmd export MACOSX_DEPLOYMENT_TARGET=${CMAKE_OSX_DEPLOYMENT_TARGET} && ./Configure -mmacosx-version-min=${CMAKE_OSX_DEPLOYMENT_TARGET})

deps/wxInspector/wxInspector.cmake

@@ -1,3 +1,26 @@
+# wxInspector finds wxWidgets through CMake's FindwxWidgets module, which only
+# searches lib/vc*_lib because _WX_TOOL is hardcoded to "vc". A superbuild driven
+# by clang-cl installs wxWidgets into lib/clang_x64_lib, so hand the module the
+# directory wxWidgets actually used, derived the same way wxWidgetsConfig.cmake
+# derives it.
+set(_wxinspector_wx_hints "")
+if (MSVC)
+    if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+        set(_wx_compiler_prefix "clang")
+    else ()
+        set(_wx_compiler_prefix "vc")
+    endif ()
+    set(_wx_arch_suffix "")
+    if (CMAKE_GENERATOR_PLATFORM AND NOT CMAKE_GENERATOR_PLATFORM STREQUAL "Win32")
+        string(TOLOWER "_${CMAKE_GENERATOR_PLATFORM}" _wx_arch_suffix)
+    elseif (CMAKE_SIZEOF_VOID_P EQUAL 8)
+        set(_wx_arch_suffix "_x64")
+    endif ()
+    set(_wxinspector_wx_hints
+        "-DwxWidgets_ROOT_DIR=${DESTDIR}"
+        "-DwxWidgets_LIB_DIR=${DESTDIR}/lib/${_wx_compiler_prefix}${_wx_arch_suffix}_lib")
+endif ()
+
 orcaslicer_add_cmake_project(
     wxInspector
     URL https://github.com/Noisyfox/wxInspector/archive/refs/tags/v1.0.0.zip
@@ -6,6 +29,7 @@ orcaslicer_add_cmake_project(
     CMAKE_ARGS
         -DCMAKE_CXX_FLAGS="-DwxDEBUG_LEVEL=0"
         -DCMAKE_POSITION_INDEPENDENT_CODE=ON
+        ${_wxinspector_wx_hints}
 )
 
 if (MSVC)

deps/wxWidgets/0001-Clang-CL-fix.patch

@@ -1,28 +0,0 @@
----
- build/cmake/wxWidgetsConfig.cmake.in | 10 +++++++++-
- 1 file changed, 10 insertions(+), 1 deletion(-)
-
-diff --git a/build/cmake/wxWidgetsConfig.cmake.in b/build/cmake/wxWidgetsConfig.cmake.in
-index 1a83f36..70ad8a4 100644
---- a/build/cmake/wxWidgetsConfig.cmake.in
-+++ b/build/cmake/wxWidgetsConfig.cmake.in
-@@ -58,7 +58,16 @@ if(WIN32_MSVC_NAMING)
-     endif()
- endif()
- 
--include("${CMAKE_CURRENT_LIST_DIR}${wxPLATFORM_LIB_DIR}/@PROJECT_NAME@Targets.cmake")
-+if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND CMAKE_CXX_COMPILER_FRONTEND_VARIANT STREQUAL "MSVC")
-+    if (CMAKE_GENERATOR_PLATFORM STREQUAL "ARM64" OR CMAKE_VS_PLATFORM_NAME STREQUAL "ARM64" OR CMAKE_SYSTEM_PROCESSOR MATCHES "^(ARM64|arm64|aarch64)$")
-+        set(_wx_clang_msvc_lib_dir "vc_arm64_lib")
-+    else()
-+        set(_wx_clang_msvc_lib_dir "vc_x64_lib")
-+    endif()
-+    include("${CMAKE_CURRENT_LIST_DIR}${wxPLATFORM_LIB_DIR}/${_wx_clang_msvc_lib_dir}/@PROJECT_NAME@Targets.cmake")
-+else()
-+    include("${CMAKE_CURRENT_LIST_DIR}${wxPLATFORM_LIB_DIR}/@PROJECT_NAME@Targets.cmake")
-+endif()
- 
- macro(wx_inherit_property source dest name)
-     # property name without _<CONFIG>
---
-2.43.0

deps/wxWidgets/wxWidgets.cmake

@@ -28,7 +28,6 @@ orcaslicer_add_cmake_project(
     GIT_SHALLOW ON
     GIT_SUBMODULES 3rdparty/catch 3rdparty/pcre 3rdparty/libwebp
     DEPENDS ${PNG_PKG} ${ZLIB_PKG} ${EXPAT_PKG} ${JPEG_PKG}
-    PATCH_COMMAND git apply --verbose --ignore-space-change --whitespace=fix ${CMAKE_CURRENT_LIST_DIR}/0001-Clang-CL-fix.patch
     CMAKE_ARGS
         -DwxBUILD_PRECOMP=ON
         ${_wx_toolkit}

docs/superpowers/plans/2026-08-14-ffmpeg-player-macos.md

@@ -0,0 +1,376 @@
+# macOS FFmpeg Media Player Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Make macOS use the same FFmpeg-based media player (`wxMediaCtrl3` + `AVVideoDecoder`) as Windows/Linux, linking the static FFmpeg libraries from the deps build, and remove the old `wxMediaCtrl2.mm` BambuPlayer-based player.
+
+**Architecture:** The new player is platform-neutral C++ already used on Linux/Windows. Enabling it on macOS is pure build wiring: compile `wxMediaCtrl3.cpp` + `AVVideoDecoder.cpp` on macOS, drop the `__WXMAC__` alias that redirects `wxMediaCtrl3` to the old `wxMediaCtrl2`, and link static FFmpeg (`libavcodec.a`/`libswscale.a`/`libavutil.a`) from the deps install. The Bambu stream API is dlsym'd at runtime from the network plugin (`libBambuSource.dylib`), which already exports it — no plugin changes needed. Rendering reuses the existing `wxImage` → `DrawBitmap` paint path (same as Linux).
+
+**Tech Stack:** C++17, wxWidgets, CMake, FFmpeg 7.0.3 (libavcodec/libswscale/libavutil), macOS (Xcode generator), `deps/` ExternalProject build system.
+
+## Global Constraints
+
+- Branch: `dev/ffmpeg-player-macos`. Commit after every task.
+- **Linux and Windows builds must not change** — the FFmpeg deps flag change is guarded by `APPLE`; Linux keeps `--enable-shared`, Windows keeps its prebuilt DLL zips.
+- Static FFmpeg only on macOS: deps produce `libavcodec.a`/`libswscale.a`/`libavutil.a`; the app links those explicitly — the app binary must have **no** `libav*` dylib references (`otool -L` check).
+- Follow existing code style: PascalCase classes, snake_case functions, C++17.
+- No changes to `StatusPanel.cpp`, `MediaPlayCtrl.*`, or the BambuTunnel interface — the app already creates `wxMediaCtrl3` and uses only its public interface.
+- The player cannot be unit-tested (hardware/plugin-dependent GUI code); verification is build-level, link-level, and manual runtime on a Mac.
+- `localization/i18n/list.txt` references only `wxMediaCtrl2.cpp` (Win/Linux, stays) — no translation-list changes needed.
+- Build dirs on the dev machine: main app = `build_arm64/` (Xcode generator, multi-config), deps = `deps/build/arm64/` (Unix Makefiles). App target name: `OrcaSlicer`. Substitute your own configured build dirs where noted.
+
+---
+
+### Task 1: Enable wxMediaCtrl3 on macOS and link static FFmpeg
+
+**Files:**
+- Modify: `src/slic3r/GUI/wxMediaCtrl3.h` (lines 18–22: the `#ifdef __WXMAC__` alias branch)
+- Modify: `src/slic3r/GUI/wxMediaCtrl3.cpp:13` (uncomment the event define)
+- Modify: `src/slic3r/GUI/wxMediaCtrl2.cpp:101` (remove the event define)
+- Modify: `src/slic3r/CMakeLists.txt` (APPLE source list ~lines 779–792; FFmpeg link block ~lines 905–910)
+
+**Interfaces:**
+- Consumes: nothing new (all classes already exist).
+- Produces: `wxMediaCtrl3` class compiled on macOS with the same interface as Linux/Windows — `Load(wxURI)`, `Play()`, `Stop()`, `SetIdleImage(wxString)`, `GetState()`, `GetLastError()`, `GetVideoSize()`, event `EVT_MEDIA_CTRL_STAT` defined once in the lib (from `wxMediaCtrl3.cpp`).
+
+- [ ] **Step 1: Remove the macOS alias in wxMediaCtrl3.h**
+
+Current (lines 16–23 of `src/slic3r/GUI/wxMediaCtrl3.h`):
+
+```cpp
+void wxMediaCtrl_OnSize(wxWindow * ctrl, wxSize const & videoSize, int width, int height);
+
+#ifdef __WXMAC__
+
+#include "wxMediaCtrl2.h"
+#define wxMediaCtrl3 wxMediaCtrl2
+
+#else
+
+#define BAMBU_DYNAMIC
+```
+
+New:
+
+```cpp
+void wxMediaCtrl_OnSize(wxWindow * ctrl, wxSize const & videoSize, int width, int height);
+
+#define BAMBU_DYNAMIC
+```
+
+Also remove the matching `#endif` that closed the `#else` branch (the one before the final `#endif /* wxMediaCtrl3_h */`), so the file's `#ifndef`/`#endif` guard pair stays balanced.
+
+- [ ] **Step 2: Move the EVT_MEDIA_CTRL_STAT definition into wxMediaCtrl3.cpp**
+
+In `src/slic3r/GUI/wxMediaCtrl3.cpp:13`, uncomment:
+
+```cpp
+//wxDEFINE_EVENT(EVT_MEDIA_CTRL_STAT, wxCommandEvent);
+```
+
+becomes:
+
+```cpp
+wxDEFINE_EVENT(EVT_MEDIA_CTRL_STAT, wxCommandEvent);
+```
+
+In `src/slic3r/GUI/wxMediaCtrl2.cpp:101`, delete:
+
+```cpp
+wxDEFINE_EVENT(EVT_MEDIA_CTRL_STAT, wxCommandEvent);
+```
+
+(One definition total in the lib — `MediaPlayCtrl.cpp:59` binds this event on the media ctrl.)
+
+- [ ] **Step 3: Update the APPLE source list in CMakeLists.txt**
+
+In `src/slic3r/CMakeLists.txt`, the APPLE branch (currently compiles `wxMediaCtrl2.mm`, which becomes dead on macOS):
+
+```cmake
+            GUI/wxMediaCtrl2.mm
+            GUI/wxMediaCtrl2.h
+            GUI/wxMediaCtrl3.h
+        )
+```
+
+becomes:
+
+```cmake
+            GUI/AVVideoDecoder.cpp
+            GUI/AVVideoDecoder.hpp
+            GUI/wxMediaCtrl3.cpp
+            GUI/wxMediaCtrl3.h
+        )
+```
+
+(The `else ()` branch — Win/Linux — stays exactly as it is.)
+
+- [ ] **Step 4: Link static FFmpeg on macOS**
+
+In `src/slic3r/CMakeLists.txt`, the FFmpeg block (currently `if (NOT APPLE)`):
+
+```cmake
+if (NOT APPLE)
+    pkg_check_modules(LIBAV REQUIRED IMPORTED_TARGET
+        libavcodec
+        libswscale
+        libavutil
+    )
+    target_link_libraries(libslic3r_gui PkgConfig::LIBAV)
+endif()
+```
+
+becomes:
+
+```cmake
+if (APPLE)
+    # Static FFmpeg from the deps install: nothing to bundle into the .app,
+    # no rpath/install_name handling. Order matters: avcodec -> swscale -> avutil.
+    find_library(LIBAVCODEC_LIBRARY NAMES libavcodec.a PATHS ${CMAKE_PREFIX_PATH}/lib NO_DEFAULT_PATH)
+    find_library(LIBSWSCALE_LIBRARY NAMES libswscale.a PATHS ${CMAKE_PREFIX_PATH}/lib NO_DEFAULT_PATH)
+    find_library(LIBAVUTIL_LIBRARY NAMES libavutil.a PATHS ${CMAKE_PREFIX_PATH}/lib NO_DEFAULT_PATH)
+    target_link_libraries(libslic3r_gui ${LIBAVCODEC_LIBRARY} ${LIBSWSCALE_LIBRARY} ${LIBAVUTIL_LIBRARY})
+    target_include_directories(libslic3r_gui SYSTEM PRIVATE ${CMAKE_PREFIX_PATH}/include)
+else ()
+    pkg_check_modules(LIBAV REQUIRED IMPORTED_TARGET
+        libavcodec
+        libswscale
+        libavutil
+    )
+    target_link_libraries(libslic3r_gui PkgConfig::LIBAV)
+endif()
+```
+
+The deps install (`${CMAKE_PREFIX_PATH}/lib`) already contains the three `.a` files from the existing arm64 deps build — no deps rebuild needed for this task.
+
+- [ ] **Step 5: Reconfigure and build the app**
+
+Run (Xcode generator; `cmake` re-runs automatically on build):
+
+```bash
+cmake --build build_arm64 --config RelWithDebInfo --target OrcaSlicer
+```
+
+Expected: configure succeeds (no `pkg_check_modules` errors on macOS, `find_library` finds all three `.a` files), compile succeeds (`wxMediaCtrl3.cpp` and `AVVideoDecoder.cpp` compile on macOS without changes), link succeeds.
+
+If CMake complains that `wxMediaCtrl3.h` is included but not in the source list or similar IDE-only warnings — ignore; headers in the list are cosmetic.
+
+- [ ] **Step 6: Verify no dynamic FFmpeg dependency**
+
+```bash
+otool -L build_arm64/src/RelWithDebInfo/OrcaSlicer.app/Contents/MacOS/OrcaSlicer | grep -i "libav" || echo "OK: no dynamic FFmpeg"
+```
+
+Expected: prints `OK: no dynamic FFmpeg` (empty grep output). This is the whole point of static linking — nothing to bundle into the `.app`.
+
+- [ ] **Step 7: Quick sanity — macOS unit tests still pass**
+
+```bash
+ctest --test-dir build_arm64/tests/libslic3r --output-on-failure
+```
+
+Expected: passes (add `-C RelWithDebInfo` if the multi-config generator requires it). If no tests were built in this build dir, build target `tests` first (`cmake --build build_arm64 --config RelWithDebInfo --target tests`).
+
+- [ ] **Step 8: Commit**
+
+```bash
+git add src/slic3r/CMakeLists.txt src/slic3r/GUI/wxMediaCtrl3.h src/slic3r/GUI/wxMediaCtrl3.cpp src/slic3r/GUI/wxMediaCtrl2.cpp
+git commit -m "feat: use FFmpeg media player on macOS with static FFmpeg"
+```
+
+---
+
+### Task 2: Static-only FFmpeg in the macOS deps build
+
+**Files:**
+- Modify: `deps/FFMPEG/FFMPEG.cmake` (non-MSVC branch, APPLE section and CONFIGURE_COMMAND)
+
+**Interfaces:**
+- Consumes: nothing.
+- Produces: a deps install on macOS containing only `libavcodec.a`, `libswscale.a`, `libavutil.a` (+ headers) — no `libav*` dylibs, so no bundling/rpath machinery is ever needed on macOS. Linux and Windows output are unchanged.
+
+- [ ] **Step 1: Add the static flag variable**
+
+In `deps/FFMPEG/FFMPEG.cmake`, inside the non-MSVC `else ()` branch, in the existing `if (APPLE)` block:
+
+```cmake
+    if (APPLE)
+        set(_minos_cmd 
+            "CFLAGS=-mmacosx-version-min=${DEP_OSX_TARGET}"
+            "LDFLAGS=-mmacosx-version-min=${DEP_OSX_TARGET}"
+            )
+```
+
+add after the `_minos_cmd` set:
+
+```cmake
+        # Static FFmpeg: nothing to bundle into the .app, no rpath handling.
+        # Shared flags must come AFTER --enable-shared below so they win.
+        set(_link_cmd --enable-static --disable-shared)
+```
+
+and add a matching `else ()` after the `if (IS_CROSS_COMPILE) ... endif()` block inside that `if (APPLE)`, so non-Apple Unix keeps shared:
+
+```cmake
+    else ()
+        set(_link_cmd --enable-shared)
+    endif ()
+```
+
+(If the existing `if (IS_CROSS_COMPILE)` block is the last thing inside `if (APPLE)`, the new `else ()` closes the `if (APPLE)` itself.)
+
+- [ ] **Step 2: Use the variable in CONFIGURE_COMMAND**
+
+In the `ExternalProject_Add(dep_FFMPEG ...)` configure command:
+
+```cmake
+            "--prefix=${DESTDIR}"
+            --enable-shared
+```
+
+becomes:
+
+```cmake
+            "--prefix=${DESTDIR}"
+            --enable-shared
+            ${_link_cmd}
+```
+
+Order matters: `--enable-shared` comes first, then `--enable-static --disable-shared` (APPLE) or `--enable-shared` (Linux) — the last flag wins in FFmpeg configure.
+
+- [ ] **Step 3: Rebuild the FFmpeg dep (slow — several minutes, run in background)**
+
+The changed CONFIGURE_COMMAND invalidates the ExternalProject stamp, so this re-configures and rebuilds FFmpeg:
+
+```bash
+cmake --build deps/build/arm64 --target dep_FFMPEG
+```
+
+For a fully clean static-only check (removes the previous shared build tree, which can leave stale `.dylib` files behind in the in-source build):
+
+```bash
+rm -rf deps/build/arm64/dep_FFMPEG-prefix
+cmake --build deps/build/arm64 --target dep_FFMPEG
+```
+
+- [ ] **Step 4: Verify the artifacts**
+
+```bash
+ls deps/build/arm64/dep_FFMPEG-prefix/src/dep_FFMPEG/libavcodec/*.a
+ls deps/build/arm64/dep_FFMPEG-prefix/src/dep_FFMPEG/libavcodec/*.dylib 2>/dev/null || echo "OK: no dylibs"
+```
+
+Expected: `libavcodec.a` present, second command prints `OK: no dylibs`. Check `libavutil` and `libswscale` the same way.
+
+- [ ] **Step 5: Verify the app still links against the static libs**
+
+```bash
+cmake --build build_arm64 --config RelWithDebInfo --target OrcaSlicer
+otool -L build_arm64/src/RelWithDebInfo/OrcaSlicer.app/Contents/MacOS/OrcaSlicer | grep -i "libav" || echo "OK: no dynamic FFmpeg"
+```
+
+Expected: build succeeds, `OK: no dynamic FFmpeg`.
+
+- [ ] **Step 6: Commit**
+
+```bash
+git add deps/FFMPEG/FFMPEG.cmake
+git commit -m "build: build static-only FFmpeg for macOS deps"
+```
+
+---
+
+### Task 3: Remove the old macOS player
+
+**Files:**
+- Delete: `src/slic3r/GUI/wxMediaCtrl2.mm`
+- Delete: `src/slic3r/GUI/BambuPlayer/BambuPlayer.h` (and the empty `BambuPlayer/` dir)
+- Modify: `src/slic3r/GUI/wxMediaCtrl2.h` (remove the `#ifdef __WXMAC__` section, lines 22–60)
+
+**Interfaces:**
+- Consumes: Task 1 (macOS no longer references `wxMediaCtrl2` — nothing includes `wxMediaCtrl2.h` on macOS anymore; `wxMediaCtrl2` is never instantiated on any platform).
+- Produces: a clean tree where the old BambuPlayer-based player is gone from macOS. The `BambuPlayer` ObjC class itself remains inside the network plugin (external prebuilt binary) — only the GUI-side consumer is removed.
+
+- [ ] **Step 1: Delete the old player files**
+
+```bash
+git rm src/slic3r/GUI/wxMediaCtrl2.mm
+git rm src/slic3r/GUI/BambuPlayer/BambuPlayer.h
+rmdir src/slic3r/GUI/BambuPlayer 2>/dev/null || true
+```
+
+- [ ] **Step 2: Strip the __WXMAC__ section from wxMediaCtrl2.h**
+
+In `src/slic3r/GUI/wxMediaCtrl2.h`, remove the entire macOS branch of the `#ifdef __WXMAC__` guard — from `#ifdef __WXMAC__` (line 22) through the closing `};` of the mac class (line 60), and the `#else` marker — leaving only the non-mac `class wxMediaCtrl2 : public wxMediaCtrl { ... };` definition followed by the final `#endif /* wxMediaCtrl2_h */`. The resulting file keeps its `#ifndef`/`#endif` include guard pair balanced.
+
+The file stays on disk because Win/Linux compile `wxMediaCtrl2.cpp`, which includes it.
+
+- [ ] **Step 3: Grep for leftover references**
+
+```bash
+grep -rn "wxMediaCtrl2.mm\|BambuPlayer/BambuPlayer.h\|BambuPlayer" src/slic3r --include="*.cpp" --include="*.h" --include="*.mm" --include="*.txt"
+```
+
+Expected: no hits in `src/slic3r/GUI` (ignore `localization/i18n/list.txt:196`, which lists the Win/Linux `wxMediaCtrl2.cpp` and stays).
+
+- [ ] **Step 4: Rebuild the app**
+
+```bash
+cmake --build build_arm64 --config RelWithDebInfo --target OrcaSlicer
+```
+
+Expected: configure + compile + link succeed with the deleted files gone.
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add -A src/slic3r/GUI
+git commit -m "refactor: remove old BambuPlayer-based media player from macOS"
+```
+
+---
+
+### Task 4: Runtime verification on hardware
+
+**Files:** none — manual verification.
+
+**Interfaces:** consumes all prior tasks. Final gate: the new player must actually stream on a Mac.
+
+- [ ] **Step 1: Launch the freshly built app**
+
+```bash
+open build_arm64/src/RelWithDebInfo/OrcaSlicer.app
+```
+
+Expected: app launches normally; no crash in the network/device subsystem.
+
+- [ ] **Step 2: Load the network plugin and open the Device tab**
+
+Log in / ensure the network plugin (`libBambuSource.dylib`) loads, select a printer, open the Device tab (camera monitoring panel).
+
+Expected: the camera preview area shows the idle image initially (no crash — this exercises `wxMediaCtrl3::SetIdleImage` and the `wxImage` load path on macOS for the first time).
+
+- [ ] **Step 3: Start the stream and watch it render**
+
+Click play / wait for `MediaPlayCtrl` to start the stream.
+
+Expected: live video renders in the panel. Check the console/log output (`BOOST_LOG` goes to the terminal if run from it, or check the log file):
+- `stat_log ...` lines appear (the `EVT_MEDIA_CTRL_STAT` path is live — proves the Bambu C API dlsym worked from `libBambuSource.dylib`);
+- no repeated decode/error messages like `AVVideoDecoder: ...` or `can not find function ...` (proves `StaticBambuLib::get` resolved all Bambu functions);
+- Stop/Play toggle works; idle image reappears on stop;
+- window resize keeps aspect ratio (exercises `DoSetSize`/`adjust_frame_size`/`paintEvent`).
+
+- [ ] **Step 4: Confirm the old player is really gone**
+
+Expected: nothing in the logs references `BambuPlayer` (the ObjC class is no longer dlsym'd); the video path is entirely `wxMediaCtrl3` + `AVVideoDecoder`.
+
+If a printer is unavailable, at minimum verify Steps 1–2 (launch + idle image) and note in the PR that live-stream verification needs hardware.
+
+- [ ] **Step 5: Final review pass**
+
+```bash
+git log --oneline -6
+git show --stat HEAD  # and each of the three task commits
+```
+
+Expected: the last 4 commits are the design doc + the 3 implementation tasks (each task commit touches only its listed files). Review the diff for scope: no Linux/Windows changes beyond the two `EVT_MEDIA_CTRL_STAT` lines in Task 1, no `StatusPanel`/`MediaPlayCtrl` changes.

docs/superpowers/specs/2026-08-14-ffmpeg-player-macos-design.md

@@ -0,0 +1,110 @@
+# FFmpeg Media Player for macOS — Design
+
+Date: 2026-08-14
+Branch: `dev/ffmpeg-player-macos`
+
+## Problem
+
+The branch's new FFmpeg-based media player (`wxMediaCtrl3` + `AVVideoDecoder`) is used on
+Windows and Linux, but macOS still runs the old player: `wxMediaCtrl2.mm`, an ObjC
+`BambuPlayer` class dlsym'd from the Bambu network plugin that renders via CALayer.
+On macOS, `wxMediaCtrl3` is currently aliased to `wxMediaCtrl2` and FFmpeg is not linked
+into the app at all.
+
+Goal: make macOS use the same FFmpeg player as Windows/Linux, linking the **static**
+FFmpeg libraries from the deps build instead of dynamic ones.
+
+## Current state (verified)
+
+- New player (Win/Linux): `GUI/wxMediaCtrl3.cpp` + `GUI/AVVideoDecoder.cpp`. Decodes with
+  FFmpeg (libavcodec/libswscale/libavutil), renders frames into `wxImage` (non-Windows) /
+  `wxBitmap` (Windows) drawn in a `paintEvent`, feeds via the `Bambu_*` C API
+  (`BambuTunnel.h`, `BAMBU_DYNAMIC`) dlsym'd from the network plugin through
+  `StaticBambuLib::get()` (`GUI/Printer/PrinterFileSystem.cpp`, compiled on all platforms).
+- Old player (macOS): `GUI/wxMediaCtrl2.mm` uses the ObjC `BambuPlayer` class found via
+  `dlsym(module, "OBJC_CLASS_$_BambuPlayer")` in `libBambuSource.dylib`.
+- The macOS network plugin `libBambuSource.dylib` already exports the full Bambu C API
+  (verified with `nm`), so the new player needs zero plugin changes.
+- FFmpeg linking in `src/slic3r/CMakeLists.txt` is guarded by `if (NOT APPLE)` —
+  macOS currently does not link FFmpeg.
+- `deps/FFMPEG/FFMPEG.cmake`: non-MSVC branch builds FFmpeg from source with
+  `--enable-shared`. The existing arm64 deps build on the dev machine happened to be
+  configured with both static and shared enabled, so `libavcodec.a` / `libswscale.a` /
+  `libavutil.a` are already present at
+  `deps/build/arm64/OrcaSlicer_dep/usr/local/lib/`.
+- `EVT_MEDIA_CTRL_STAT` is `wxDEFINE_EVENT`'d in `wxMediaCtrl2.cpp` (Win/Linux) and
+  `wxMediaCtrl2.mm` (macOS); the define in `wxMediaCtrl3.cpp` is commented out.
+- `wxMediaCtrl2` is never instantiated anywhere on any platform — dead code.
+- `StatusPanel` already creates `wxMediaCtrl3`; `MediaPlayCtrl` only uses the
+  `wxMediaCtrl3` interface (`Load/Play/Stop/GetState/GetVideoSize/GetLastError/SetIdleImage`),
+  so no UI-side changes are needed.
+
+## Approach (approved)
+
+**Reuse the shared player on macOS.** Compile the existing `wxMediaCtrl3.cpp` +
+`AVVideoDecoder.cpp` on macOS so all three platforms run one implementation.
+Rendering uses the existing `wxImage` → `DrawBitmap` paint path, identical to Linux.
+Known trade-off: frames are scaled to the widget's logical (1x) size, so Retina is
+slightly soft compared to the old CALayer player. Accepted for now; a Retina-aware
+scaling follow-up is possible later.
+
+Rejected alternative: a native CGImage/CALayer renderer for macOS — faster and
+Retina-crisp, but adds a second render implementation to maintain.
+
+## Changes
+
+### 1. Enable the FFmpeg player on macOS (source)
+
+- `GUI/wxMediaCtrl3.h`: remove the `#ifdef __WXMAC__` branch (lines 18–22) that aliases
+  `wxMediaCtrl3` → `wxMediaCtrl2`. macOS then compiles the real `wxMediaCtrl3` class,
+  including the `BAMBU_DYNAMIC` BambuTunnel path used on Linux.
+- Event symbol fix: move `wxDEFINE_EVENT(EVT_MEDIA_CTRL_STAT, wxCommandEvent)` into
+  `wxMediaCtrl3.cpp` (uncomment the existing line) and remove it from
+  `wxMediaCtrl2.cpp`. One definition total in the lib; all three platforms resolve it.
+
+### 2. Static FFmpeg linking (deps + app)
+
+- `deps/FFMPEG/FFMPEG.cmake`: in the non-MSVC branch, pass
+  `--disable-shared --enable-static` when `APPLE`. Linux keeps `--enable-shared`;
+  Windows keeps its prebuilt shared DLL zips. Fresh macOS deps builds install only
+  `libavcodec.a` / `libswscale.a` / `libavutil.a` — no dylibs to bundle, no
+  rpath/install_name handling. (The existing local arm64 deps build already contains
+  the `.a` files, so no deps rebuild is strictly needed to try the change locally,
+  but a fresh CI deps build must produce them.)
+- `src/slic3r/CMakeLists.txt`:
+  - APPLE branch of `SLIC3R_GUI_SOURCES`: add `GUI/wxMediaCtrl3.cpp`,
+    `GUI/wxMediaCtrl3.h`, `GUI/AVVideoDecoder.cpp`, `GUI/AVVideoDecoder.hpp`;
+    remove `GUI/wxMediaCtrl2.mm` and `GUI/wxMediaCtrl2.h` (the `.h` stays on
+    disk for the Win/Linux build of `wxMediaCtrl2.cpp`, but nothing on macOS
+    includes it after this change).
+  - Add an APPLE mirror of the `NOT APPLE` FFmpeg block: `find_library` for
+    `libavcodec.a`, `libswscale.a`, `libavutil.a` under `${CMAKE_PREFIX_PATH}/lib`
+    with `NO_DEFAULT_PATH`, link them (order avcodec → swscale → avutil), and add
+    `${CMAKE_PREFIX_PATH}/include` as a SYSTEM include directory. Deps are built with
+    `--disable-zlib` and no external codecs, so the three static libs link cleanly.
+
+### 3. Remove the old player
+
+- Delete `GUI/wxMediaCtrl2.mm` and `GUI/BambuPlayer/BambuPlayer.h` (header used only
+  by the `.mm`; the real `BambuPlayer` lives inside the network plugin).
+- Remove the now-dead `__WXMAC__` section of `GUI/wxMediaCtrl2.h`.
+- `wxMediaCtrl2.cpp` (Win/Linux) stays in the build as-is (dead but harmless; out of
+  scope to remove on this branch).
+
+### 4. Verification
+
+- Build on macOS: `cmake --build build_arm64` (or `build/arm64`).
+- Confirm no dynamic FFmpeg dependency: `otool -L` on the app binary shows no `libav*`
+  dylib references.
+- Runtime: with the network plugin loaded, the Device tab camera preview streams via
+  the FFmpeg player (check the device page / `MediaPlayCtrl`).
+- macOS `ctest` still passes — static linking means no test-executable `.so` copying
+  hacks (unlike the Linux shared-lib setup).
+
+## Out of scope
+
+- Linux (shared libs, AppImage/flatpak bundling) and Windows (prebuilt DLL zips)
+  keep their current FFmpeg setup.
+- Retina-aware frame scaling / native CGImage rendering (follow-up if visual quality
+  is judged insufficient).
+- Audio streaming (neither player plays audio in this UI path).

localization/i18n/list.txt

@@ -193,7 +193,6 @@ src/slic3r/GUI/ObjColorDialog.cpp
 src/slic3r/GUI/SyncAmsInfoDialog.cpp
 src/slic3r/GUI/WipeTowerDialog.cpp
 src/slic3r/GUI/wxExtensions.cpp
-src/slic3r/GUI/wxMediaCtrl2.cpp
 src/slic3r/GUI/WebUserLoginDialog.cpp
 src/slic3r/GUI/WebGuideDialog.cpp
 src/slic3r/GUI/KBShortcutsDialog.hpp

resources/calib/temperature_tower/gen_belt_temp_tower.py

@@ -0,0 +1,79 @@
+#!/usr/bin/env python3
+"""Belt temperature-tower asset generator (discrete-provini design).
+
+A vertical temperature tower cannot be sliced on a belt printer, so lay a row of
+DISCRETE provini (one per temperature) along the belt (designed Y) with a fixed
+surface gap. Each provino is the chevron+arc unit (belt_temp_provino_unit.stl,
+keel-first); its temperature is ENGRAVED upright into the 50 mm face — a raised
+number would be an unsupported overhang on the belt. The C++ calib_temp belt branch
+(Plater.cpp) injects one M104 per zone 70 layers INTO provino i:
+  print_z[i] = i * PITCH * cos(theta) + 70 * layer_height   (theta = 45)
+inside the body, not in the empty inter-provino gap (which has no sliced layers for
+the event to attach to). PITCH below is the shared geometry contract with that code —
+keep them in sync.
+
+Generates one STL per filament temp range used by Temp_Calibration_Dlg.
+"""
+import numpy as np, trimesh, os
+from matplotlib.textpath import TextPath
+from matplotlib.font_manager import FontProperties
+from shapely.geometry import Polygon as ShPoly
+from shapely.ops import unary_union
+
+HERE = os.path.dirname(os.path.abspath(__file__))
+UNIT = os.path.join(HERE, 'belt_temp_provino_unit.stl')   # single provino, keel-first
+SURF_GAP = 25.0            # surface-to-surface gap between provini (mm) — user spec
+TEXT_H = 9.0
+TEXT_DEPTH = 0.8           # engraving depth (numbers are CUT into the face, not raised:
+                          # a raised number is an unsupported Y-overhang on the belt)
+TEXT_OVERSHOOT = 0.6       # extra height poking out of the face for a clean boolean cut
+
+# Temperature ranges (start, end) per filament family, 5 C step. File name encodes them.
+RANGES = [(230,190),(270,230),(250,230),(280,240),(240,210),(320,280)]
+
+unit = trimesh.load(UNIT)
+dY = unit.bounds[1,1] - unit.bounds[0,1]
+PITCH = dY + SURF_GAP                       # designed-Y pitch == C++ contract constant
+print(f"unit dY={dY:.2f}  PITCH={PITCH:.3f}  (C++ contract: print_z[i]=i*{PITCH:.3f}*cos45)")
+
+# 50 mm face normal (0,-1,1)/sqrt2 ; UPRIGHT basis u=+X det(+1) (verified non-mirrored)
+n = np.array([0,-1,1.])/np.sqrt(2)
+u = np.array([1,0,0.]); v = np.array([0,1,1.])/np.sqrt(2)
+R = np.column_stack([u,v,n])
+fn = unit.face_normals; fc = unit.triangles_center; fa = unit.area_faces
+sel = (fn@n) > 0.9
+face_c = (fc[sel]*fa[sel,None]).sum(0)/fa[sel].sum()
+
+def text_mesh(s):
+    tp = TextPath((0,0), s, size=TEXT_H, prop=FontProperties(family='DejaVu Sans'))
+    rings = [ShPoly(p) for p in tp.to_polygons() if len(p)>=3]
+    rings.sort(key=lambda r:r.area, reverse=True)
+    used=[False]*len(rings); parts=[]
+    for i,o in enumerate(rings):
+        if used[i]: continue
+        holes=[]
+        for j in range(i+1,len(rings)):
+            if not used[j] and o.contains(rings[j]): holes.append(rings[j].exterior.coords); used[j]=True
+        parts.append(ShPoly(o.exterior.coords,holes)); used[i]=True
+    poly = unary_union(parts)
+    geoms = list(poly.geoms) if poly.geom_type=='MultiPolygon' else [poly]
+    m = trimesh.util.concatenate([trimesh.creation.extrude_polygon(g,height=TEXT_DEPTH+TEXT_OVERSHOOT) for g in geoms])
+    c = m.bounds.mean(axis=0); m.apply_translation([-c[0],-c[1],0]); return m
+
+for t_start, t_end in RANGES:
+    temps = list(range(t_start, t_end-1, -5))
+    parts=[]
+    for i,T in enumerate(temps):
+        c = unit.copy(); c.apply_translation([0, i*PITCH, 0])
+        t = text_mesh(str(T)); M=np.eye(4); M[:3,:3]=R; t.apply_transform(M)
+        # place the text spanning from TEXT_DEPTH inside the face to TEXT_OVERSHOOT outside,
+        # then CUT it out of the provino (engrave) — no raised material, no Y-overhang.
+        t.apply_translation(face_c - n*TEXT_DEPTH + np.array([0,i*PITCH,0]))
+        c = trimesh.boolean.difference([c, t], engine='manifold')
+        parts.append(c)
+    asset = trimesh.util.concatenate(parts)
+    out = os.path.join(HERE, f"belt_temp_tower_{t_start}_{t_end}.stl")
+    asset.export(out)
+    dims = np.round(asset.bounds[1]-asset.bounds[0],1)
+    wt = all(p.is_watertight for p in parts)
+    print(f"  {t_start}->{t_end}: {len(temps)} zones  bbox={dims}  watertight={wt}  -> {os.path.basename(out)}")

resources/profiles/Custom.json

@@ -1,9 +1,13 @@
 {
 	"name": "Custom Printer",
-	"version": "02.04.00.03",
+	"version": "02.04.00.04",
 	"force_update": "0",
 	"description": "My configurations",
 	"machine_model_list": [
+		{
+			"name": "Generic Belt Printer",
+			"sub_path": "machine/MyBeltPrinter.json"
+		},
 		{
 			"name": "Generic Klipper Printer",
 			"sub_path": "machine/MyKlipper.json"
@@ -62,6 +66,14 @@
 			"name": "0.16mm Optimal @MyKlipper",
 			"sub_path": "process/0.16mm Optimal @MyKlipper.json"
 		},
+		{
+			"name": "0.12mm Fine @MyBeltPrinter",
+			"sub_path": "process/0.12mm Fine @MyBeltPrinter.json"
+		},
+		{
+			"name": "0.20mm Standard @MyBeltPrinter",
+			"sub_path": "process/0.20mm Standard @MyBeltPrinter.json"
+		},
 		{
 			"name": "0.20mm Standard @MyKlipper",
 			"sub_path": "process/0.20mm Standard @MyKlipper.json"
@@ -262,18 +274,38 @@
 			"name": "MyKlipper 0.8 nozzle",
 			"sub_path": "machine/MyKlipper 0.8 nozzle.json"
 		},
+		{
+			"name": "fdm_belt_common",
+			"sub_path": "machine/fdm_belt_common.json"
+		},
 		{
 			"name": "fdm_toolchanger_common",
 			"sub_path": "machine/fdm_toolchanger_common.json"
 		},
-		{
-			"name": "MyRepetier 0.4 nozzle",
-			"sub_path": "machine/MyRepetier 0.4 nozzle.json"
-		},
 		{
 			"name": "MyRRF 0.4 nozzle",
 			"sub_path": "machine/MyRRF 0.4 nozzle.json"
 		},
+		{
+			"name": "MyBeltPrinter 0.2 nozzle",
+			"sub_path": "machine/MyBeltPrinter 0.2 nozzle.json"
+		},
+		{
+			"name": "MyBeltPrinter 0.4 nozzle",
+			"sub_path": "machine/MyBeltPrinter 0.4 nozzle.json"
+		},
+		{
+			"name": "MyBeltPrinter 0.6 nozzle",
+			"sub_path": "machine/MyBeltPrinter 0.6 nozzle.json"
+		},
+		{
+			"name": "MyBeltPrinter 0.8 nozzle",
+			"sub_path": "machine/MyBeltPrinter 0.8 nozzle.json"
+		},
+		{
+			"name": "MyRepetier 0.4 nozzle",
+			"sub_path": "machine/MyRepetier 0.4 nozzle.json"
+		},
 		{
 			"name": "MyToolChanger 0.2 nozzle",
 			"sub_path": "machine/MyToolChanger 0.2 nozzle.json"

resources/profiles/Custom/machine/MyBeltPrinter 0.2 nozzle.json

@@ -0,0 +1,27 @@
+{
+	"type": "machine",
+	"name": "MyBeltPrinter 0.2 nozzle",
+	"inherits": "fdm_belt_common",
+	"from": "system",
+	"setting_id": "3w1uyJdmm14QhDnH",
+	"instantiation": "true",
+	"printer_model": "Generic Belt Printer",
+	"default_print_profile": "0.12mm Fine @MyBeltPrinter",
+	"nozzle_diameter": [
+		"0.2"
+	],
+	"max_layer_height": [
+		"0.16"
+	],
+	"min_layer_height": [
+		"0.04"
+	],
+	"printer_variant": "0.2",
+	"printable_area": [
+		"0x0",
+		"350x0",
+		"350x350",
+		"0x350"
+	],
+	"printable_height": "300"
+}

resources/profiles/Custom/machine/MyBeltPrinter 0.4 nozzle.json

@@ -0,0 +1,20 @@
+{
+	"type": "machine",
+	"name": "MyBeltPrinter 0.4 nozzle",
+	"inherits": "fdm_belt_common",
+	"from": "system",
+	"setting_id": "6nRHUtvJOUffocbu",
+	"instantiation": "true",
+	"printer_model": "Generic Belt Printer",
+	"nozzle_diameter": [
+		"0.4"
+	],
+	"printer_variant": "0.4",
+	"printable_area": [
+		"0x0",
+		"350x0",
+		"350x350",
+		"0x350"
+	],
+	"printable_height": "300"
+}

resources/profiles/Custom/machine/MyBeltPrinter 0.6 nozzle.json

@@ -0,0 +1,26 @@
+{
+	"type": "machine",
+	"name": "MyBeltPrinter 0.6 nozzle",
+	"inherits": "fdm_belt_common",
+	"from": "system",
+	"setting_id": "K0m9HbUNwKT4UCJV",
+	"instantiation": "true",
+	"printer_model": "Generic Belt Printer",
+	"nozzle_diameter": [
+		"0.6"
+	],
+	"max_layer_height": [
+		"0.4"
+	],
+	"min_layer_height": [
+		"0.12"
+	],
+	"printer_variant": "0.6",
+	"printable_area": [
+		"0x0",
+		"350x0",
+		"350x350",
+		"0x350"
+	],
+	"printable_height": "300"
+}

resources/profiles/Custom/machine/MyBeltPrinter 0.8 nozzle.json

@@ -0,0 +1,26 @@
+{
+	"type": "machine",
+	"name": "MyBeltPrinter 0.8 nozzle",
+	"inherits": "fdm_belt_common",
+	"from": "system",
+	"setting_id": "rHAweDz4eNwttPNA",
+	"instantiation": "true",
+	"printer_model": "Generic Belt Printer",
+	"nozzle_diameter": [
+		"0.8"
+	],
+	"max_layer_height": [
+		"0.6"
+	],
+	"min_layer_height": [
+		"0.2"
+	],
+	"printer_variant": "0.8",
+	"printable_area": [
+		"0x0",
+		"350x0",
+		"350x350",
+		"0x350"
+	],
+	"printable_height": "300"
+}

resources/profiles/Custom/machine/MyBeltPrinter.json

@@ -0,0 +1,12 @@
+{
+	"type": "machine_model",
+	"name": "Generic Belt Printer",
+	"model_id": "my_belt_01",
+	"nozzle_diameter": "0.4;0.2;0.6;0.8",
+	"machine_tech": "FFF",
+	"family": "MyPrinter",
+	"bed_model": "Custom_350_bed.stl",
+	"bed_texture": "orcaslicer_bed_texture.svg",
+	"hotend_model": "",
+	"default_materials": "Generic PLA @System;Generic PLA-CF @System;Generic PETG @System;Generic TPU @System;Generic PC @System;Generic PVA @System;Generic PA @System;Generic PA-CF @System"
+}

resources/profiles/Custom/machine/fdm_belt_common.json

@@ -0,0 +1,99 @@
+{
+	"type": "machine",
+	"name": "fdm_belt_common",
+	"inherits": "fdm_klipper_common",
+	"from": "system",
+	"instantiation": "false",
+	"gcode_flavor": "klipper",
+	"single_extruder_multi_material": "0",
+	"default_filament_profile": [
+		"Generic PLA @System"
+	],
+	"default_print_profile": "0.20mm Standard @MyBeltPrinter",
+	"max_layer_height": [
+		"0.32"
+	],
+	"min_layer_height": [
+		"0.08"
+	],
+	"deretraction_speed": [
+		"30"
+	],
+	"extruder_colour": [
+		"#FCE94F"
+	],
+	"extruder_offset": [
+		"0x0"
+	],
+	"long_retractions_when_cut": [
+		"0"
+	],
+	"nozzle_diameter": [
+		"0.4"
+	],
+	"retract_before_wipe": [
+		"70%"
+	],
+	"retract_length_toolchange": [
+		"2"
+	],
+	"retract_lift_above": [
+		"0"
+	],
+	"retract_lift_below": [
+		"0"
+	],
+	"retract_lift_enforce": [
+		"All Surfaces"
+	],
+	"retract_restart_extra": [
+		"0"
+	],
+	"retract_restart_extra_toolchange": [
+		"0"
+	],
+	"retract_when_changing_layer": [
+		"1"
+	],
+	"retraction_distances_when_cut": [
+		"18"
+	],
+	"retraction_length": [
+		"0.8"
+	],
+	"retraction_minimum_travel": [
+		"1"
+	],
+	"retraction_speed": [
+		"30"
+	],
+	"travel_slope": [
+		"3"
+	],
+	"wipe": [
+		"1"
+	],
+	"wipe_distance": [
+		"1"
+	],
+	"z_hop": [
+		"0.4"
+	],
+	"z_hop_types": [
+		"Normal Lift"
+	],
+	"gcode_remap_x": "rev_x",
+	"gcode_remap_y": "pos_z",
+	"gcode_remap_z": "pos_y",
+	"printer_extruder_id": [
+		"1"
+	],
+	"belt_printer": "1",
+	"belt_slice_rotation": "x",
+	"belt_slice_rotation_angle": "45",
+	"belt_slice_rotation_global": "1",
+	"build_plate_tilt_x": "45",
+	"purge_in_prime_tower": "0",
+	"scan_first_layer": "0",
+	"auxiliary_fan": "0"
+}

resources/profiles/Custom/process/0.12mm Fine @MyBeltPrinter.json

@@ -0,0 +1,20 @@
+{
+	"type": "process",
+	"name": "0.12mm Fine @MyBeltPrinter",
+	"inherits": "fdm_process_klipper_common",
+	"from": "system",
+	"setting_id": "EugqqdLJ423bgEwN",
+	"instantiation": "true",
+	"layer_height": "0.12",
+	"initial_layer_print_height": "0.12",
+	"bottom_shell_layers": "5",
+	"top_shell_layers": "6",
+	"support_top_z_distance": "0.08",
+	"support_bottom_z_distance": "0.08",
+	"skirt_loops": "0",
+	"skirt_distance": "0",
+	"compatible_printers": [
+		"MyBeltPrinter 0.2 nozzle",
+		"MyBeltPrinter 0.4 nozzle"
+	]
+}

resources/profiles/Custom/process/0.20mm Standard @MyBeltPrinter.json

@@ -0,0 +1,17 @@
+{
+	"type": "process",
+	"name": "0.20mm Standard @MyBeltPrinter",
+	"inherits": "fdm_process_klipper_common",
+	"from": "system",
+	"setting_id": "YzCDAgH3uLOM53pF",
+	"instantiation": "true",
+	"layer_height": "0.2",
+	"initial_layer_print_height": "0.2",
+	"skirt_loops": "0",
+	"skirt_distance": "0",
+	"compatible_printers": [
+		"MyBeltPrinter 0.4 nozzle",
+		"MyBeltPrinter 0.6 nozzle",
+		"MyBeltPrinter 0.8 nozzle"
+	]
+}

resources/profiles/IdeaFormer.json

@@ -0,0 +1,54 @@
+{
+    "name": "IdeaFormer",
+    "version": "02.00.00.03",
+    "force_update": "0",
+    "description": "IdeaFormer belt printer configurations",
+    "machine_model_list": [
+        {
+            "name": "IdeaFormer IR3 V2",
+            "sub_path": "machine/IdeaFormer IR3 V2.json"
+        }
+    ],
+    "process_list": [
+        {
+            "name": "fdm_process_common",
+            "sub_path": "process/fdm_process_common.json"
+        },
+        {
+            "name": "0.20mm Standard @IdeaFormer IR3 V2",
+            "sub_path": "process/0.20mm Standard @IdeaFormer IR3 V2.json"
+        }
+    ],
+    "filament_list": [
+        {
+            "name": "Generic PLA @IdeaFormer IR3 V2",
+            "sub_path": "filament/Generic PLA @IdeaFormer IR3 V2.json"
+        },
+        {
+            "name": "eSUN PLA @IdeaFormer IR3 V2",
+            "sub_path": "filament/eSUN PLA @IdeaFormer IR3 V2.json"
+        },
+        {
+            "name": "Generic PETG @IdeaFormer IR3 V2",
+            "sub_path": "filament/Generic PETG @IdeaFormer IR3 V2.json"
+        }
+    ],
+    "machine_list": [
+        {
+            "name": "fdm_machine_common",
+            "sub_path": "machine/fdm_machine_common.json"
+        },
+        {
+            "name": "fdm_klipper_common",
+            "sub_path": "machine/fdm_klipper_common.json"
+        },
+        {
+            "name": "fdm_belt_common",
+            "sub_path": "machine/fdm_belt_common.json"
+        },
+        {
+            "name": "IdeaFormer IR3 V2 0.4 nozzle",
+            "sub_path": "machine/IdeaFormer IR3 V2 0.4 nozzle.json"
+        }
+    ]
+}

resources/profiles/IdeaFormer/filament/Generic PETG @IdeaFormer IR3 V2.json

@@ -0,0 +1,113 @@
+{
+	"type": "filament",
+	"name": "Generic PETG @IdeaFormer IR3 V2",
+	"inherits": "Generic PETG @System",
+	"from": "system",
+	"setting_id": "n4zaXcUUzTqAxq5f",
+	"instantiation": "true",
+	"compatible_printers": [
+		"IdeaFormer IR3 V2 0.4 nozzle"
+	],
+	"filament_type": [
+		"PETG"
+	],
+	"filament_vendor": [
+		"Generic"
+	],
+	"filament_settings_id": [
+		"Generic PETG @IdeaFormer IR3 V2"
+	],
+	"filament_diameter": [
+		"1.75"
+	],
+	"filament_density": [
+		"1.27"
+	],
+	"filament_flow_ratio": [
+		"0.95"
+	],
+	"filament_cost": [
+		"25"
+	],
+	"filament_max_volumetric_speed": [
+		"10"
+	],
+	"nozzle_temperature": [
+		"240"
+	],
+	"nozzle_temperature_initial_layer": [
+		"245"
+	],
+	"nozzle_temperature_range_low": [
+		"220"
+	],
+	"nozzle_temperature_range_high": [
+		"260"
+	],
+	"temperature_vitrification": [
+		"70"
+	],
+	"hot_plate_temp": [
+		"80"
+	],
+	"hot_plate_temp_initial_layer": [
+		"80"
+	],
+	"cool_plate_temp": [
+		"80"
+	],
+	"cool_plate_temp_initial_layer": [
+		"80"
+	],
+	"textured_plate_temp": [
+		"80"
+	],
+	"textured_plate_temp_initial_layer": [
+		"80"
+	],
+	"fan_min_speed": [
+		"40"
+	],
+	"fan_max_speed": [
+		"60"
+	],
+	"overhang_fan_threshold": [
+		"25%"
+	],
+	"overhang_fan_speed": [
+		"80"
+	],
+	"close_fan_the_first_x_layers": [
+		"3"
+	],
+	"full_fan_speed_layer": [
+		"8"
+	],
+	"slow_down_min_speed": [
+		"20"
+	],
+	"slow_down_layer_time": [
+		"4"
+	],
+	"fan_cooling_layer_time": [
+		"100"
+	],
+	"reduce_fan_stop_start_freq": [
+		"1"
+	],
+	"filament_retraction_length": [
+		"2"
+	],
+	"filament_retraction_speed": [
+		"40"
+	],
+	"filament_deretraction_speed": [
+		"40"
+	],
+	"filament_z_hop": [
+		"0.4"
+	],
+	"filament_start_gcode": [
+		"; Generic PETG @IdeaFormer IR3 V2 — belt PETG, bed 80C"
+	]
+}

resources/profiles/IdeaFormer/filament/Generic PLA @IdeaFormer IR3 V2.json

@@ -0,0 +1,113 @@
+{
+	"type": "filament",
+	"name": "Generic PLA @IdeaFormer IR3 V2",
+	"inherits": "Generic PLA @System",
+	"from": "system",
+	"setting_id": "1xjycsEAFh6KQIhp",
+	"instantiation": "true",
+	"compatible_printers": [
+		"IdeaFormer IR3 V2 0.4 nozzle"
+	],
+	"filament_type": [
+		"PLA"
+	],
+	"filament_vendor": [
+		"Generic"
+	],
+	"filament_settings_id": [
+		"Generic PLA @IdeaFormer IR3 V2"
+	],
+	"filament_diameter": [
+		"1.75"
+	],
+	"filament_density": [
+		"1.24"
+	],
+	"filament_flow_ratio": [
+		"0.98"
+	],
+	"filament_cost": [
+		"20"
+	],
+	"filament_max_volumetric_speed": [
+		"12"
+	],
+	"nozzle_temperature": [
+		"215"
+	],
+	"nozzle_temperature_initial_layer": [
+		"220"
+	],
+	"nozzle_temperature_range_low": [
+		"190"
+	],
+	"nozzle_temperature_range_high": [
+		"240"
+	],
+	"temperature_vitrification": [
+		"45"
+	],
+	"hot_plate_temp": [
+		"75"
+	],
+	"hot_plate_temp_initial_layer": [
+		"75"
+	],
+	"cool_plate_temp": [
+		"75"
+	],
+	"cool_plate_temp_initial_layer": [
+		"75"
+	],
+	"textured_plate_temp": [
+		"75"
+	],
+	"textured_plate_temp_initial_layer": [
+		"75"
+	],
+	"fan_min_speed": [
+		"100"
+	],
+	"fan_max_speed": [
+		"100"
+	],
+	"overhang_fan_threshold": [
+		"50%"
+	],
+	"overhang_fan_speed": [
+		"100"
+	],
+	"close_fan_the_first_x_layers": [
+		"3"
+	],
+	"full_fan_speed_layer": [
+		"8"
+	],
+	"slow_down_min_speed": [
+		"20"
+	],
+	"slow_down_layer_time": [
+		"4"
+	],
+	"fan_cooling_layer_time": [
+		"100"
+	],
+	"reduce_fan_stop_start_freq": [
+		"1"
+	],
+	"filament_retraction_length": [
+		"1.5"
+	],
+	"filament_retraction_speed": [
+		"35"
+	],
+	"filament_deretraction_speed": [
+		"30"
+	],
+	"filament_z_hop": [
+		"0.4"
+	],
+	"filament_start_gcode": [
+		"; Generic PLA @IdeaFormer IR3 V2 — belt PLA, bed 75C"
+	]
+}

resources/profiles/IdeaFormer/filament/eSUN PLA @IdeaFormer IR3 V2.json

@@ -0,0 +1,35 @@
+{
+	"type": "filament",
+	"name": "eSUN PLA @IdeaFormer IR3 V2",
+	"inherits": "Generic PLA @IdeaFormer IR3 V2",
+	"from": "system",
+	"setting_id": "XqkviBmFHEglXueX",
+	"instantiation": "true",
+	"compatible_printers": [
+		"IdeaFormer IR3 V2 0.4 nozzle"
+	],
+	"filament_type": [
+		"PLA"
+	],
+	"filament_vendor": [
+		"eSUN"
+	],
+	"filament_settings_id": [
+		"eSUN PLA @IdeaFormer IR3 V2"
+	],
+	"nozzle_temperature_initial_layer": [
+		"200"
+	],
+	"nozzle_temperature": [
+		"200"
+	],
+	"enable_pressure_advance": [
+		"1"
+	],
+	"pressure_advance": [
+		"0.12"
+	],
+	"filament_max_volumetric_speed": [
+		"20"
+	]
+}

resources/profiles/IdeaFormer/machine/IdeaFormer IR3 V2 0.4 nozzle.json

@@ -0,0 +1,94 @@
+{
+	"type": "machine",
+	"name": "IdeaFormer IR3 V2 0.4 nozzle",
+	"inherits": "fdm_belt_common",
+	"from": "system",
+	"setting_id": "MDQZgwRgg72lmjtu",
+	"instantiation": "true",
+	"printer_model": "IdeaFormer IR3 V2",
+	"printer_variant": "0.4",
+	"nozzle_diameter": [
+		"0.4"
+	],
+	"printable_area": [
+		"0x0",
+		"250x0",
+		"250x2000",
+		"0x2000"
+	],
+	"printable_height": "250",
+	"belt_printer_infinite_y": "1",
+	"thumbnails": [
+		"48x48/PNG",
+		"300x300/PNG"
+	],
+	"default_filament_profile": [
+		"Generic PLA @IdeaFormer IR3 V2"
+	],
+	"default_print_profile": "0.20mm Standard @IdeaFormer IR3 V2",
+	"use_relative_e_distances": "1",
+	"machine_max_acceleration_e": [
+		"5000"
+	],
+	"machine_max_acceleration_extruding": [
+		"5000"
+	],
+	"machine_max_acceleration_retracting": [
+		"1000"
+	],
+	"machine_max_acceleration_travel": [
+		"9000"
+	],
+	"machine_max_acceleration_x": [
+		"5000"
+	],
+	"machine_max_acceleration_y": [
+		"5000"
+	],
+	"machine_max_acceleration_z": [
+		"100"
+	],
+	"machine_max_jerk_e": [
+		"2.5"
+	],
+	"machine_max_jerk_x": [
+		"10"
+	],
+	"machine_max_jerk_y": [
+		"10"
+	],
+	"machine_max_jerk_z": [
+		"0.4"
+	],
+	"machine_max_speed_e": [
+		"60"
+	],
+	"machine_max_speed_x": [
+		"500"
+	],
+	"machine_max_speed_y": [
+		"500"
+	],
+	"machine_max_speed_z": [
+		"20"
+	],
+	"retraction_length": [
+		"2"
+	],
+	"retraction_speed": [
+		"40"
+	],
+	"deretraction_speed": [
+		"40"
+	],
+	"z_hop": [
+		"0.4"
+	],
+	"retract_lift_below": [
+		"300"
+	],
+	"machine_start_gcode": "; === IdeaFormer IR3 V2 Belt Printer Start ===\n; Axes: X=lateral, Y=gantry height (probe), Z=belt\nG90 ; absolute positioning\nM82 ; absolute extruder\nG21 ; millimeters\nG28 ; home all axes\nG1 Y20 F500 ; lift nozzle 20mm from belt\n; Bed + hotend temps come from the active filament profile. Belt PLA requires 75 C bed — use Generic/eSun PLA @IdeaFormer IR3 V2 filament presets to get it automatically.\nM140 S[hot_plate_temp_initial_layer] ; set bed temp\nM104 S[nozzle_temperature_initial_layer] ; hotend temp\nM109 S[nozzle_temperature_initial_layer] ; wait hotend\nM190 S[hot_plate_temp_initial_layer] ; wait bed\n; --- Purge blob ---\nG92 E0 ; zero extruder\nG1 Y.1 ; nozzle 0.1mm above belt\nG1 E15 F1000 ; purge 15mm blob\nG1 Z20 E25 F800 ; belt advance 20mm + extrude\nG1 E23 ; retract 2mm\nG28 Y ; re-probe belt surface\nG1 E25 ; de-retract\n; --- Prime lines (full 250mm bed width) ---\nFMS_on ; filament motion sensor\nG1 X250 E50 F2000 ; prime line 1\nG92 Z0 ; reset belt origin\nG1 Z.4 ; belt advance 0.4mm\nG1 X0 E75 ; prime line 2\nG1 F1000 ; default feedrate\nG92 E0 Z0 ; zero extruder + belt = print origin\n",
+	"machine_end_gcode": "; === IdeaFormer IR3 V2 Belt Printer End ===\nM400 ; wait for moves to finish\nM104 S0 ; heater off\nM140 S0 ; bed off\nG92 E0 ; zero extruder\nG1 E-5 F300 ; retract 5mm\nG4 P5000 ; wait for ooze\nG91 ; relative mode - keep every end move relative on a belt\nG1 Y20 F1000 ; raise gantry 20mm for clearance over the part\nG1 Z676 F3000 ; advance belt one full machine-depth to eject the part and clean the belt\nG90 ; back to absolute\nG28 X ; home X only - NEVER 'G28' all: that homes Z/belt and reverses the whole print back into the gantry\nFMS_off ; filament motion sensor off\nBED_MESH_CLEAR\nM84 ; disable motors\n",
+	"machine_pause_gcode": "PAUSE",
+	"layer_change_gcode": "G92 E0 ; belt: reset extruder at layer change (relative E)"
+}

resources/profiles/IdeaFormer/machine/IdeaFormer IR3 V2.json

@@ -0,0 +1,12 @@
+{
+	"type": "machine_model",
+	"name": "IdeaFormer IR3 V2",
+	"model_id": "IdeaFormer_IR3_V2",
+	"nozzle_diameter": "0.4",
+	"machine_tech": "FFF",
+	"family": "IdeaFormer",
+	"bed_model": "",
+	"bed_texture": "",
+	"hotend_model": "",
+	"default_materials": "Generic PLA @IdeaFormer IR3 V2;Generic PETG @IdeaFormer IR3 V2"
+}

resources/profiles/IdeaFormer/machine/fdm_belt_common.json

@@ -0,0 +1,99 @@
+{
+	"type": "machine",
+	"name": "fdm_belt_common",
+	"inherits": "fdm_klipper_common",
+	"from": "system",
+	"instantiation": "false",
+	"gcode_flavor": "klipper",
+	"single_extruder_multi_material": "0",
+	"default_filament_profile": [
+		"Generic PLA @System"
+	],
+	"default_print_profile": "0.20mm Standard @IdeaFormer IR3 V2",
+	"max_layer_height": [
+		"0.32"
+	],
+	"min_layer_height": [
+		"0.08"
+	],
+	"deretraction_speed": [
+		"30"
+	],
+	"extruder_colour": [
+		"#FCE94F"
+	],
+	"extruder_offset": [
+		"0x0"
+	],
+	"long_retractions_when_cut": [
+		"0"
+	],
+	"nozzle_diameter": [
+		"0.4"
+	],
+	"retract_before_wipe": [
+		"70%"
+	],
+	"retract_length_toolchange": [
+		"2"
+	],
+	"retract_lift_above": [
+		"0"
+	],
+	"retract_lift_below": [
+		"0"
+	],
+	"retract_lift_enforce": [
+		"All Surfaces"
+	],
+	"retract_restart_extra": [
+		"0"
+	],
+	"retract_restart_extra_toolchange": [
+		"0"
+	],
+	"retract_when_changing_layer": [
+		"1"
+	],
+	"retraction_distances_when_cut": [
+		"18"
+	],
+	"retraction_length": [
+		"0.8"
+	],
+	"retraction_minimum_travel": [
+		"1"
+	],
+	"retraction_speed": [
+		"30"
+	],
+	"travel_slope": [
+		"3"
+	],
+	"wipe": [
+		"1"
+	],
+	"wipe_distance": [
+		"1"
+	],
+	"z_hop": [
+		"0.4"
+	],
+	"z_hop_types": [
+		"Normal Lift"
+	],
+	"gcode_remap_x": "rev_x",
+	"gcode_remap_y": "pos_z",
+	"gcode_remap_z": "pos_y",
+	"printer_extruder_id": [
+		"1"
+	],
+	"belt_printer": "1",
+	"belt_slice_rotation": "x",
+	"belt_slice_rotation_angle": "45",
+	"belt_slice_rotation_global": "1",
+	"build_plate_tilt_x": "45",
+	"purge_in_prime_tower": "0",
+	"scan_first_layer": "0",
+	"auxiliary_fan": "0"
+}

resources/profiles/IdeaFormer/machine/fdm_klipper_common.json

@@ -0,0 +1,141 @@
+{
+	"type": "machine",
+	"name": "fdm_klipper_common",
+	"inherits": "fdm_machine_common",
+	"from": "system",
+	"instantiation": "false",
+	"gcode_flavor": "klipper",
+	"machine_max_acceleration_e": [
+		"5000",
+		"5000"
+	],
+	"machine_max_acceleration_extruding": [
+		"20000",
+		"20000"
+	],
+	"machine_max_acceleration_retracting": [
+		"5000",
+		"5000"
+	],
+	"machine_max_acceleration_travel": [
+		"20000",
+		"20000"
+	],
+	"machine_max_acceleration_x": [
+		"20000",
+		"20000"
+	],
+	"machine_max_acceleration_y": [
+		"20000",
+		"20000"
+	],
+	"machine_max_acceleration_z": [
+		"500",
+		"200"
+	],
+	"machine_max_speed_e": [
+		"25",
+		"25"
+	],
+	"machine_max_speed_x": [
+		"500",
+		"200"
+	],
+	"machine_max_speed_y": [
+		"500",
+		"200"
+	],
+	"machine_max_speed_z": [
+		"12",
+		"12"
+	],
+	"machine_max_jerk_e": [
+		"2.5",
+		"2.5"
+	],
+	"machine_max_jerk_x": [
+		"9",
+		"9"
+	],
+	"machine_max_jerk_y": [
+		"9",
+		"9"
+	],
+	"machine_max_jerk_z": [
+		"0.2",
+		"0.4"
+	],
+	"machine_min_extruding_rate": [
+		"0",
+		"0"
+	],
+	"machine_min_travel_rate": [
+		"0",
+		"0"
+	],
+	"max_layer_height": [
+		"0.32"
+	],
+	"min_layer_height": [
+		"0.08"
+	],
+	"printable_height": "250",
+	"extruder_clearance_radius": "65",
+	"extruder_clearance_height_to_rod": "36",
+	"extruder_clearance_height_to_lid": "140",
+	"printer_settings_id": "",
+	"printer_technology": "FFF",
+	"printer_variant": "0.4",
+	"retraction_minimum_travel": [
+		"1"
+	],
+	"retract_before_wipe": [
+		"70%"
+	],
+	"retract_when_changing_layer": [
+		"1"
+	],
+	"retraction_length": [
+		"0.8"
+	],
+	"retract_length_toolchange": [
+		"2"
+	],
+	"z_hop": [
+		"0.4"
+	],
+	"retract_restart_extra": [
+		"0"
+	],
+	"retract_restart_extra_toolchange": [
+		"0"
+	],
+	"retraction_speed": [
+		"30"
+	],
+	"deretraction_speed": [
+		"30"
+	],
+	"z_hop_types": "Normal Lift",
+	"silent_mode": "0",
+	"single_extruder_multi_material": "1",
+	"change_filament_gcode": "",
+	"wipe": [
+		"1"
+	],
+	"default_filament_profile": [
+		"Generic PLA @System"
+	],
+	"default_print_profile": "0.20mm Standard @MyKlipper",
+	"bed_exclude_area": [
+		"0x0"
+	],
+	"machine_start_gcode": "M190 S[bed_temperature_initial_layer_single]\nM109 S[nozzle_temperature_initial_layer]\nPRINT_START EXTRUDER=[nozzle_temperature_initial_layer] BED=[bed_temperature_initial_layer_single]\n",
+	"machine_end_gcode": "PRINT_END",
+	"layer_change_gcode": ";AFTER_LAYER_CHANGE\n;[layer_z]",
+	"before_layer_change_gcode": ";BEFORE_LAYER_CHANGE\n;[layer_z]\nG92 E0\n",
+	"machine_pause_gcode": "PAUSE",
+	"scan_first_layer": "0",
+	"nozzle_type": "undefine",
+	"auxiliary_fan": "0"
+}

resources/profiles/IdeaFormer/machine/fdm_machine_common.json

@@ -0,0 +1,119 @@
+{
+	"type": "machine",
+	"name": "fdm_machine_common",
+	"from": "system",
+	"instantiation": "false",
+	"printer_technology": "FFF",
+	"deretraction_speed": [
+		"40"
+	],
+	"extruder_colour": [
+		"#FCE94F"
+	],
+	"extruder_offset": [
+		"0x0"
+	],
+	"gcode_flavor": "marlin",
+	"silent_mode": "0",
+	"machine_max_acceleration_e": [
+		"5000"
+	],
+	"machine_max_acceleration_extruding": [
+		"10000"
+	],
+	"machine_max_acceleration_retracting": [
+		"1000"
+	],
+	"machine_max_acceleration_x": [
+		"10000"
+	],
+	"machine_max_acceleration_y": [
+		"10000"
+	],
+	"machine_max_acceleration_z": [
+		"500"
+	],
+	"machine_max_speed_e": [
+		"60"
+	],
+	"machine_max_speed_x": [
+		"500"
+	],
+	"machine_max_speed_y": [
+		"500"
+	],
+	"machine_max_speed_z": [
+		"10"
+	],
+	"machine_max_jerk_e": [
+		"5"
+	],
+	"machine_max_jerk_x": [
+		"8"
+	],
+	"machine_max_jerk_y": [
+		"8"
+	],
+	"machine_max_jerk_z": [
+		"0.4"
+	],
+	"machine_min_extruding_rate": [
+		"0"
+	],
+	"machine_min_travel_rate": [
+		"0"
+	],
+	"max_layer_height": [
+		"0.32"
+	],
+	"min_layer_height": [
+		"0.08"
+	],
+	"printable_height": "250",
+	"extruder_clearance_radius": "65",
+	"extruder_clearance_height_to_rod": "36",
+	"extruder_clearance_height_to_lid": "140",
+	"nozzle_diameter": [
+		"0.4"
+	],
+	"printer_settings_id": "",
+	"printer_variant": "0.4",
+	"retraction_minimum_travel": [
+		"2"
+	],
+	"retract_before_wipe": [
+		"70%"
+	],
+	"retract_when_changing_layer": [
+		"1"
+	],
+	"retraction_length": [
+		"1"
+	],
+	"retract_length_toolchange": [
+		"1"
+	],
+	"z_hop": [
+		"0"
+	],
+	"retract_restart_extra": [
+		"0"
+	],
+	"retract_restart_extra_toolchange": [
+		"0"
+	],
+	"retraction_speed": [
+		"60"
+	],
+	"single_extruder_multi_material": "1",
+	"change_filament_gcode": "",
+	"wipe": [
+		"1"
+	],
+	"default_print_profile": "",
+	"machine_start_gcode": "G0 Z20 F9000\nG92 E0; G1 E-10 F1200\nG28\nM970 Q1 A10 B10 C130 K0\nM970 Q1 A10 B131 C250 K1\nM974 Q1 S1 P0\nM970 Q0 A10 B10 C130 H20 K0\nM970 Q0 A10 B131 C250 K1\nM974 Q0 S1 P0\nM220 S100 ;Reset Feedrate\nM221 S100 ;Reset Flowrate\nG29 ;Home\nG90;\nG92 E0 ;Reset Extruder \nG1 Z2.0 F3000 ;Move Z Axis up \nG1 X10.1 Y20 Z0.28 F5000.0 ;Move to start position\nM109 S205;\nG1 X10.1 Y200.0 Z0.28 F1500.0 E15 ;Draw the first line\nG1 X10.4 Y200.0 Z0.28 F5000.0 ;Move to side a little\nG1 X10.4 Y20 Z0.28 F1500.0 E30 ;Draw the second line\nG92 E0 ;Reset Extruder \nG1 X110 Y110 Z2.0 F3000 ;Move Z Axis up",
+	"machine_end_gcode": "M400 ; wait for buffer to clear\nG92 E0 ; zero the extruder\nG1 E-4.0 F3600; retract \nG91\nG1 Z3;\nM104 S0 ; turn off hotend\nM140 S0 ; turn off bed\nM106 S0 ; turn off fan\nG90 \nG0 X110 Y200 F3600 \nprint_end",
+	"layer_change_gcode": ";AFTER_LAYER_CHANGE\n;[layer_z]",
+	"before_layer_change_gcode": ";BEFORE_LAYER_CHANGE\n;[layer_z]\nG92 E0\n",
+	"machine_pause_gcode": "M601"
+}

resources/profiles/IdeaFormer/process/0.20mm Standard @IdeaFormer IR3 V2.json

@@ -0,0 +1,23 @@
+{
+	"type": "process",
+	"name": "0.20mm Standard @IdeaFormer IR3 V2",
+	"inherits": "fdm_process_common",
+	"from": "system",
+	"setting_id": "91atcIwv5728phqX",
+	"instantiation": "true",
+	"layer_height": "0.2",
+	"initial_layer_print_height": "0.2",
+	"initial_layer_line_width": "0.42",
+	"wall_loops": "2",
+	"reduce_infill_retraction": "1",
+	"detect_overhang_wall": "1",
+	"skirt_loops": "0",
+	"skirt_distance": "0",
+	"sparse_infill_pattern": "grid",
+	"sparse_infill_speed": "200",
+	"support_base_pattern": "rectilinear",
+	"support_interface_pattern": "rectilinear",
+	"compatible_printers": [
+		"IdeaFormer IR3 V2 0.4 nozzle"
+	]
+}

resources/profiles/IdeaFormer/process/fdm_process_common.json

@@ -0,0 +1,108 @@
+{
+	"type": "process",
+	"name": "fdm_process_common",
+	"from": "system",
+	"instantiation": "false",
+	"adaptive_layer_height": "0",
+	"reduce_crossing_wall": "0",
+	"max_travel_detour_distance": "0",
+	"bottom_surface_pattern": "monotonic",
+	"bottom_shell_thickness": "0",
+	"bridge_speed": "50",
+	"brim_width": "5",
+	"brim_object_gap": "0.1",
+	"compatible_printers": [],
+	"compatible_printers_condition": "",
+	"print_sequence": "by layer",
+	"default_acceleration": "1000",
+	"initial_layer_acceleration": "500",
+	"top_surface_acceleration": "1000",
+	"travel_acceleration": "1000",
+	"inner_wall_acceleration": "1000",
+	"outer_wall_acceleration": "700",
+	"bridge_no_support": "0",
+	"draft_shield": "disabled",
+	"elefant_foot_compensation": "0",
+	"enable_arc_fitting": "0",
+	"wall_infill_order": "inner wall/outer wall/infill",
+	"infill_direction": "45",
+	"sparse_infill_density": "15%",
+	"sparse_infill_pattern": "crosshatch",
+	"initial_layer_print_height": "0.2",
+	"infill_combination": "0",
+	"infill_wall_overlap": "25%",
+	"interface_shells": "0",
+	"ironing_flow": "10%",
+	"ironing_spacing": "0.15",
+	"ironing_speed": "30",
+	"ironing_type": "no ironing",
+	"reduce_infill_retraction": "1",
+	"filename_format": "{input_filename_base}_{layer_height}mm_{filament_type[initial_tool]}_{printer_model}_{print_time}.gcode",
+	"detect_overhang_wall": "1",
+	"slowdown_for_curled_perimeters": "1",
+	"overhang_1_4_speed": "0",
+	"overhang_2_4_speed": "50",
+	"overhang_3_4_speed": "30",
+	"overhang_4_4_speed": "10",
+	"line_width": "110%",
+	"inner_wall_line_width": "110%",
+	"outer_wall_line_width": "100%",
+	"top_surface_line_width": "93.75%",
+	"sparse_infill_line_width": "110%",
+	"initial_layer_line_width": "120%",
+	"internal_solid_infill_line_width": "120%",
+	"support_line_width": "96%",
+	"wall_loops": "3",
+	"print_settings_id": "",
+	"raft_layers": "0",
+	"seam_position": "aligned",
+	"skirt_distance": "2",
+	"skirt_height": "3",
+	"min_skirt_length": "4",
+	"skirt_loops": "0",
+	"minimum_sparse_infill_area": "15",
+	"spiral_mode": "0",
+	"standby_temperature_delta": "-5",
+	"enable_support": "0",
+	"resolution": "0.012",
+	"support_type": "normal(auto)",
+	"support_on_build_plate_only": "0",
+	"support_top_z_distance": "0.2",
+	"support_bottom_z_distance": "0.2",
+	"support_filament": "0",
+	"support_interface_loop_pattern": "0",
+	"support_interface_filament": "0",
+	"support_interface_top_layers": "2",
+	"support_interface_bottom_layers": "2",
+	"support_interface_spacing": "0.5",
+	"support_interface_speed": "80",
+	"support_base_pattern": "default",
+	"support_base_pattern_spacing": "2.5",
+	"support_speed": "150",
+	"support_threshold_angle": "30",
+	"support_object_xy_distance": "0.35",
+	"tree_support_branch_angle": "30",
+	"tree_support_wall_count": "0",
+	"tree_support_with_infill": "0",
+	"detect_thin_wall": "0",
+	"top_surface_pattern": "monotonicline",
+	"top_shell_thickness": "0.8",
+	"enable_prime_tower": "1",
+	"wipe_tower_no_sparse_layers": "0",
+	"prime_tower_width": "60",
+	"xy_hole_compensation": "0",
+	"xy_contour_compensation": "0",
+	"layer_height": "0.2",
+	"bottom_shell_layers": "3",
+	"top_shell_layers": "4",
+	"bridge_flow": "1",
+	"initial_layer_speed": "45",
+	"initial_layer_infill_speed": "45",
+	"outer_wall_speed": "45",
+	"inner_wall_speed": "80",
+	"sparse_infill_speed": "150",
+	"internal_solid_infill_speed": "150",
+	"top_surface_speed": "50",
+	"gap_infill_speed": "30",
+	"travel_speed": "200"
+}

resources/profiles/Printcepts.json

@@ -0,0 +1,54 @@
+{
+	"name": "Printcepts",
+	"version": "01.00.00.01",
+	"force_update": "0",
+	"description": "Printcepts belt printer configurations",
+	"machine_model_list": [
+		{
+			"name": "BabyBelt Pro",
+			"sub_path": "machine/BabyBelt Pro.json"
+		}
+	],
+	"process_list": [
+		{
+			"name": "fdm_process_common",
+			"sub_path": "process/fdm_process_common.json"
+		},
+		{
+			"name": "0.20mm Standard @BabyBelt Pro",
+			"sub_path": "process/0.20mm Standard @BabyBelt Pro.json"
+		}
+	],
+	"filament_list": [
+		{
+			"name": "Generic PLA @BabyBelt Pro",
+			"sub_path": "filament/Generic PLA @BabyBelt Pro.json"
+		},
+		{
+			"name": "eSUN PLA @BabyBelt Pro",
+			"sub_path": "filament/eSUN PLA @BabyBelt Pro.json"
+		},
+		{
+			"name": "Generic PETG @BabyBelt Pro",
+			"sub_path": "filament/Generic PETG @BabyBelt Pro.json"
+		}
+	],
+	"machine_list": [
+		{
+			"name": "fdm_machine_common",
+			"sub_path": "machine/fdm_machine_common.json"
+		},
+		{
+			"name": "fdm_klipper_common",
+			"sub_path": "machine/fdm_klipper_common.json"
+		},
+		{
+			"name": "fdm_belt_common",
+			"sub_path": "machine/fdm_belt_common.json"
+		},
+		{
+			"name": "BabyBelt Pro 0.4 nozzle",
+			"sub_path": "machine/BabyBelt Pro 0.4 nozzle.json"
+		}
+	]
+}

resources/profiles/Printcepts/BabyBelt Pro_bed_texture.svg

@@ -0,0 +1,70 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="95.0mm" height="500.0mm" viewBox="0 0 95.0 500.0" preserveAspectRatio="xMidYMid meet">
+  <!-- Printcepts BabyBelt Pro bed texture: 95 x 500 mm belt plate. -->
+  <!-- Transparent plate; green (#195F30) BabyBelt Pro logo centered along X, near the bottom edge. -->
+  <rect x="0" y="0" width="95.0" height="500.0" fill="none"/>
+  <g transform="translate(14.2500,436.3488) scale(0.067538)">
+    <g transform="translate(-11.000000,692.938562) scale(0.100000,-0.100000)"
+fill="#195F30" stroke="none">
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resources/profiles/Printcepts/filament/Generic PETG @BabyBelt Pro.json

@@ -0,0 +1,113 @@
+{
+	"type": "filament",
+	"name": "Generic PETG @BabyBelt Pro",
+	"inherits": "Generic PETG @System",
+	"from": "system",
+	"setting_id": "gCzHpDNgVwQR6tgk",
+	"instantiation": "true",
+	"compatible_printers": [
+		"BabyBelt Pro 0.4 nozzle"
+	],
+	"filament_type": [
+		"PETG"
+	],
+	"filament_vendor": [
+		"Generic"
+	],
+	"filament_settings_id": [
+		"Generic PETG @BabyBelt Pro"
+	],
+	"filament_diameter": [
+		"1.75"
+	],
+	"filament_density": [
+		"1.27"
+	],
+	"filament_flow_ratio": [
+		"0.95"
+	],
+	"filament_cost": [
+		"25"
+	],
+	"filament_max_volumetric_speed": [
+		"10"
+	],
+	"nozzle_temperature": [
+		"240"
+	],
+	"nozzle_temperature_initial_layer": [
+		"245"
+	],
+	"nozzle_temperature_range_low": [
+		"220"
+	],
+	"nozzle_temperature_range_high": [
+		"260"
+	],
+	"temperature_vitrification": [
+		"70"
+	],
+	"hot_plate_temp": [
+		"80"
+	],
+	"hot_plate_temp_initial_layer": [
+		"80"
+	],
+	"cool_plate_temp": [
+		"80"
+	],
+	"cool_plate_temp_initial_layer": [
+		"80"
+	],
+	"textured_plate_temp": [
+		"80"
+	],
+	"textured_plate_temp_initial_layer": [
+		"80"
+	],
+	"fan_min_speed": [
+		"40"
+	],
+	"fan_max_speed": [
+		"60"
+	],
+	"overhang_fan_threshold": [
+		"25%"
+	],
+	"overhang_fan_speed": [
+		"80"
+	],
+	"close_fan_the_first_x_layers": [
+		"3"
+	],
+	"full_fan_speed_layer": [
+		"8"
+	],
+	"slow_down_min_speed": [
+		"20"
+	],
+	"slow_down_layer_time": [
+		"4"
+	],
+	"fan_cooling_layer_time": [
+		"100"
+	],
+	"reduce_fan_stop_start_freq": [
+		"1"
+	],
+	"filament_retraction_length": [
+		"2"
+	],
+	"filament_retraction_speed": [
+		"40"
+	],
+	"filament_deretraction_speed": [
+		"40"
+	],
+	"filament_z_hop": [
+		"0.4"
+	],
+	"filament_start_gcode": [
+		"; Generic PETG @BabyBelt Pro — belt PETG, bed 80C"
+	]
+}

resources/profiles/Printcepts/filament/Generic PLA @BabyBelt Pro.json

@@ -0,0 +1,113 @@
+{
+	"type": "filament",
+	"name": "Generic PLA @BabyBelt Pro",
+	"inherits": "Generic PLA @System",
+	"from": "system",
+	"setting_id": "24PpcnhVx9v5f4fD",
+	"instantiation": "true",
+	"compatible_printers": [
+		"BabyBelt Pro 0.4 nozzle"
+	],
+	"filament_type": [
+		"PLA"
+	],
+	"filament_vendor": [
+		"Generic"
+	],
+	"filament_settings_id": [
+		"Generic PLA @BabyBelt Pro"
+	],
+	"filament_diameter": [
+		"1.75"
+	],
+	"filament_density": [
+		"1.24"
+	],
+	"filament_flow_ratio": [
+		"0.98"
+	],
+	"filament_cost": [
+		"20"
+	],
+	"filament_max_volumetric_speed": [
+		"12"
+	],
+	"nozzle_temperature": [
+		"215"
+	],
+	"nozzle_temperature_initial_layer": [
+		"220"
+	],
+	"nozzle_temperature_range_low": [
+		"190"
+	],
+	"nozzle_temperature_range_high": [
+		"240"
+	],
+	"temperature_vitrification": [
+		"45"
+	],
+	"hot_plate_temp": [
+		"75"
+	],
+	"hot_plate_temp_initial_layer": [
+		"75"
+	],
+	"cool_plate_temp": [
+		"75"
+	],
+	"cool_plate_temp_initial_layer": [
+		"75"
+	],
+	"textured_plate_temp": [
+		"75"
+	],
+	"textured_plate_temp_initial_layer": [
+		"75"
+	],
+	"fan_min_speed": [
+		"100"
+	],
+	"fan_max_speed": [
+		"100"
+	],
+	"overhang_fan_threshold": [
+		"50%"
+	],
+	"overhang_fan_speed": [
+		"100"
+	],
+	"close_fan_the_first_x_layers": [
+		"3"
+	],
+	"full_fan_speed_layer": [
+		"8"
+	],
+	"slow_down_min_speed": [
+		"20"
+	],
+	"slow_down_layer_time": [
+		"4"
+	],
+	"fan_cooling_layer_time": [
+		"100"
+	],
+	"reduce_fan_stop_start_freq": [
+		"1"
+	],
+	"filament_retraction_length": [
+		"1.5"
+	],
+	"filament_retraction_speed": [
+		"35"
+	],
+	"filament_deretraction_speed": [
+		"30"
+	],
+	"filament_z_hop": [
+		"0.4"
+	],
+	"filament_start_gcode": [
+		"; Generic PLA @BabyBelt Pro — belt PLA, bed 75C"
+	]
+}

resources/profiles/Printcepts/filament/eSUN PLA @BabyBelt Pro.json

@@ -0,0 +1,35 @@
+{
+	"type": "filament",
+	"name": "eSUN PLA @BabyBelt Pro",
+	"inherits": "Generic PLA @BabyBelt Pro",
+	"from": "system",
+	"setting_id": "EH3X7oE0DU5tSpjW",
+	"instantiation": "true",
+	"compatible_printers": [
+		"BabyBelt Pro 0.4 nozzle"
+	],
+	"filament_type": [
+		"PLA"
+	],
+	"filament_vendor": [
+		"eSUN"
+	],
+	"filament_settings_id": [
+		"eSUN PLA @BabyBelt Pro"
+	],
+	"nozzle_temperature_initial_layer": [
+		"200"
+	],
+	"nozzle_temperature": [
+		"200"
+	],
+	"enable_pressure_advance": [
+		"1"
+	],
+	"pressure_advance": [
+		"0.12"
+	],
+	"filament_max_volumetric_speed": [
+		"20"
+	]
+}

resources/profiles/Printcepts/machine/BabyBelt Pro 0.4 nozzle.json

@@ -0,0 +1,87 @@
+{
+	"type": "machine",
+	"name": "BabyBelt Pro 0.4 nozzle",
+	"inherits": "fdm_belt_common",
+	"from": "system",
+	"setting_id": "34OWINlJpJgA9DwQ",
+	"instantiation": "true",
+	"printer_model": "BabyBelt Pro",
+	"printer_variant": "0.4",
+	"nozzle_diameter": [
+		"0.4"
+	],
+	"default_filament_profile": [
+		"Generic PLA @BabyBelt Pro"
+	],
+	"default_print_profile": "0.20mm Standard @BabyBelt Pro",
+	"printable_area": [
+		"0x0",
+		"95x0",
+		"95x500",
+		"0x500"
+	],
+	"printable_height": "100",
+	"best_object_pos": "0.5,0.05",
+	"nozzle_type": [
+		"hardened_steel"
+	],
+	"printer_extruder_id": [
+		"1"
+	],
+	"printer_extruder_variant": [
+		"Direct Drive Standard"
+	],
+	"thumbnails": [
+		"48x48/PNG",
+		"300x300/PNG"
+	],
+	"machine_max_acceleration_e": [
+		"500",
+		"5000"
+	],
+	"machine_max_acceleration_extruding": [
+		"500",
+		"20000"
+	],
+	"machine_max_acceleration_retracting": [
+		"500",
+		"5000"
+	],
+	"machine_max_acceleration_x": [
+		"500",
+		"20000"
+	],
+	"machine_max_acceleration_y": [
+		"500",
+		"20000"
+	],
+	"machine_max_junction_deviation": [
+		"0.01"
+	],
+	"machine_max_speed_x": [
+		"50",
+		"200"
+	],
+	"machine_max_speed_y": [
+		"50",
+		"200"
+	],
+	"machine_max_speed_z": [
+		"5",
+		"12"
+	],
+	"retraction_length": [
+		"1.5"
+	],
+	"retraction_speed": [
+		"20"
+	],
+	"deretraction_speed": [
+		"25"
+	],
+	"retract_lift_enforce": [
+		"Top and Bottom"
+	],
+	"support_chamber_temp_control": "0",
+	"machine_start_gcode": ";Start GCode\nPRINT_START ANGLE=[belt_slice_rotation_angle] EXTRUDER=[nozzle_temperature_initial_layer] BED=[hot_plate_temp_initial_layer] MATERIAL=[filament_type]\n"
+}

resources/profiles/Printcepts/machine/BabyBelt Pro.json

@@ -0,0 +1,12 @@
+{
+	"type": "machine_model",
+	"name": "BabyBelt Pro",
+	"model_id": "Printcepts_BabyBelt_Pro",
+	"nozzle_diameter": "0.4",
+	"machine_tech": "FFF",
+	"family": "Printcepts",
+	"bed_model": "",
+	"bed_texture": "BabyBelt Pro_bed_texture.svg",
+	"hotend_model": "",
+	"default_materials": "Generic PLA @BabyBelt Pro;Generic PETG @BabyBelt Pro"
+}

resources/profiles/Printcepts/machine/fdm_belt_common.json

@@ -0,0 +1,99 @@
+{
+	"type": "machine",
+	"name": "fdm_belt_common",
+	"inherits": "fdm_klipper_common",
+	"from": "system",
+	"instantiation": "false",
+	"gcode_flavor": "klipper",
+	"single_extruder_multi_material": "0",
+	"default_filament_profile": [
+		"Generic PLA @System"
+	],
+	"default_print_profile": "0.20mm Standard @BabyBelt Pro",
+	"max_layer_height": [
+		"0.32"
+	],
+	"min_layer_height": [
+		"0.08"
+	],
+	"deretraction_speed": [
+		"30"
+	],
+	"extruder_colour": [
+		"#FCE94F"
+	],
+	"extruder_offset": [
+		"0x0"
+	],
+	"long_retractions_when_cut": [
+		"0"
+	],
+	"nozzle_diameter": [
+		"0.4"
+	],
+	"retract_before_wipe": [
+		"70%"
+	],
+	"retract_length_toolchange": [
+		"2"
+	],
+	"retract_lift_above": [
+		"0"
+	],
+	"retract_lift_below": [
+		"0"
+	],
+	"retract_lift_enforce": [
+		"All Surfaces"
+	],
+	"retract_restart_extra": [
+		"0"
+	],
+	"retract_restart_extra_toolchange": [
+		"0"
+	],
+	"retract_when_changing_layer": [
+		"1"
+	],
+	"retraction_distances_when_cut": [
+		"18"
+	],
+	"retraction_length": [
+		"0.8"
+	],
+	"retraction_minimum_travel": [
+		"1"
+	],
+	"retraction_speed": [
+		"30"
+	],
+	"travel_slope": [
+		"3"
+	],
+	"wipe": [
+		"1"
+	],
+	"wipe_distance": [
+		"1"
+	],
+	"z_hop": [
+		"0.4"
+	],
+	"z_hop_types": [
+		"Normal Lift"
+	],
+	"gcode_remap_x": "rev_x",
+	"gcode_remap_y": "pos_z",
+	"gcode_remap_z": "pos_y",
+	"printer_extruder_id": [
+		"1"
+	],
+	"belt_printer": "1",
+	"belt_slice_rotation": "x",
+	"belt_slice_rotation_angle": "45",
+	"belt_slice_rotation_global": "1",
+	"build_plate_tilt_x": "45",
+	"purge_in_prime_tower": "0",
+	"scan_first_layer": "0",
+	"auxiliary_fan": "0"
+}

resources/profiles/Printcepts/machine/fdm_klipper_common.json

@@ -0,0 +1,141 @@
+{
+	"type": "machine",
+	"name": "fdm_klipper_common",
+	"inherits": "fdm_machine_common",
+	"from": "system",
+	"instantiation": "false",
+	"gcode_flavor": "klipper",
+	"machine_max_acceleration_e": [
+		"5000",
+		"5000"
+	],
+	"machine_max_acceleration_extruding": [
+		"20000",
+		"20000"
+	],
+	"machine_max_acceleration_retracting": [
+		"5000",
+		"5000"
+	],
+	"machine_max_acceleration_travel": [
+		"20000",
+		"20000"
+	],
+	"machine_max_acceleration_x": [
+		"20000",
+		"20000"
+	],
+	"machine_max_acceleration_y": [
+		"20000",
+		"20000"
+	],
+	"machine_max_acceleration_z": [
+		"500",
+		"200"
+	],
+	"machine_max_speed_e": [
+		"25",
+		"25"
+	],
+	"machine_max_speed_x": [
+		"500",
+		"200"
+	],
+	"machine_max_speed_y": [
+		"500",
+		"200"
+	],
+	"machine_max_speed_z": [
+		"12",
+		"12"
+	],
+	"machine_max_jerk_e": [
+		"2.5",
+		"2.5"
+	],
+	"machine_max_jerk_x": [
+		"9",
+		"9"
+	],
+	"machine_max_jerk_y": [
+		"9",
+		"9"
+	],
+	"machine_max_jerk_z": [
+		"0.2",
+		"0.4"
+	],
+	"machine_min_extruding_rate": [
+		"0",
+		"0"
+	],
+	"machine_min_travel_rate": [
+		"0",
+		"0"
+	],
+	"max_layer_height": [
+		"0.32"
+	],
+	"min_layer_height": [
+		"0.08"
+	],
+	"printable_height": "250",
+	"extruder_clearance_radius": "65",
+	"extruder_clearance_height_to_rod": "36",
+	"extruder_clearance_height_to_lid": "140",
+	"printer_settings_id": "",
+	"printer_technology": "FFF",
+	"printer_variant": "0.4",
+	"retraction_minimum_travel": [
+		"1"
+	],
+	"retract_before_wipe": [
+		"70%"
+	],
+	"retract_when_changing_layer": [
+		"1"
+	],
+	"retraction_length": [
+		"0.8"
+	],
+	"retract_length_toolchange": [
+		"2"
+	],
+	"z_hop": [
+		"0.4"
+	],
+	"retract_restart_extra": [
+		"0"
+	],
+	"retract_restart_extra_toolchange": [
+		"0"
+	],
+	"retraction_speed": [
+		"30"
+	],
+	"deretraction_speed": [
+		"30"
+	],
+	"z_hop_types": "Normal Lift",
+	"silent_mode": "0",
+	"single_extruder_multi_material": "1",
+	"change_filament_gcode": "",
+	"wipe": [
+		"1"
+	],
+	"default_filament_profile": [
+		"Generic PLA @System"
+	],
+	"default_print_profile": "0.20mm Standard @MyKlipper",
+	"bed_exclude_area": [
+		"0x0"
+	],
+	"machine_start_gcode": "M190 S[bed_temperature_initial_layer_single]\nM109 S[nozzle_temperature_initial_layer]\nPRINT_START EXTRUDER=[nozzle_temperature_initial_layer] BED=[bed_temperature_initial_layer_single]\n",
+	"machine_end_gcode": "PRINT_END",
+	"layer_change_gcode": ";AFTER_LAYER_CHANGE\n;[layer_z]",
+	"before_layer_change_gcode": ";BEFORE_LAYER_CHANGE\n;[layer_z]\nG92 E0\n",
+	"machine_pause_gcode": "PAUSE",
+	"scan_first_layer": "0",
+	"nozzle_type": "undefine",
+	"auxiliary_fan": "0"
+}

resources/profiles/Printcepts/machine/fdm_machine_common.json

@@ -0,0 +1,119 @@
+{
+	"type": "machine",
+	"name": "fdm_machine_common",
+	"from": "system",
+	"instantiation": "false",
+	"printer_technology": "FFF",
+	"deretraction_speed": [
+		"40"
+	],
+	"extruder_colour": [
+		"#FCE94F"
+	],
+	"extruder_offset": [
+		"0x0"
+	],
+	"gcode_flavor": "marlin",
+	"silent_mode": "0",
+	"machine_max_acceleration_e": [
+		"5000"
+	],
+	"machine_max_acceleration_extruding": [
+		"10000"
+	],
+	"machine_max_acceleration_retracting": [
+		"1000"
+	],
+	"machine_max_acceleration_x": [
+		"10000"
+	],
+	"machine_max_acceleration_y": [
+		"10000"
+	],
+	"machine_max_acceleration_z": [
+		"500"
+	],
+	"machine_max_speed_e": [
+		"60"
+	],
+	"machine_max_speed_x": [
+		"500"
+	],
+	"machine_max_speed_y": [
+		"500"
+	],
+	"machine_max_speed_z": [
+		"10"
+	],
+	"machine_max_jerk_e": [
+		"5"
+	],
+	"machine_max_jerk_x": [
+		"8"
+	],
+	"machine_max_jerk_y": [
+		"8"
+	],
+	"machine_max_jerk_z": [
+		"0.4"
+	],
+	"machine_min_extruding_rate": [
+		"0"
+	],
+	"machine_min_travel_rate": [
+		"0"
+	],
+	"max_layer_height": [
+		"0.32"
+	],
+	"min_layer_height": [
+		"0.08"
+	],
+	"printable_height": "250",
+	"extruder_clearance_radius": "65",
+	"extruder_clearance_height_to_rod": "36",
+	"extruder_clearance_height_to_lid": "140",
+	"nozzle_diameter": [
+		"0.4"
+	],
+	"printer_settings_id": "",
+	"printer_variant": "0.4",
+	"retraction_minimum_travel": [
+		"2"
+	],
+	"retract_before_wipe": [
+		"70%"
+	],
+	"retract_when_changing_layer": [
+		"1"
+	],
+	"retraction_length": [
+		"1"
+	],
+	"retract_length_toolchange": [
+		"1"
+	],
+	"z_hop": [
+		"0"
+	],
+	"retract_restart_extra": [
+		"0"
+	],
+	"retract_restart_extra_toolchange": [
+		"0"
+	],
+	"retraction_speed": [
+		"60"
+	],
+	"single_extruder_multi_material": "1",
+	"change_filament_gcode": "",
+	"wipe": [
+		"1"
+	],
+	"default_print_profile": "",
+	"machine_start_gcode": "G0 Z20 F9000\nG92 E0; G1 E-10 F1200\nG28\nM970 Q1 A10 B10 C130 K0\nM970 Q1 A10 B131 C250 K1\nM974 Q1 S1 P0\nM970 Q0 A10 B10 C130 H20 K0\nM970 Q0 A10 B131 C250 K1\nM974 Q0 S1 P0\nM220 S100 ;Reset Feedrate\nM221 S100 ;Reset Flowrate\nG29 ;Home\nG90;\nG92 E0 ;Reset Extruder \nG1 Z2.0 F3000 ;Move Z Axis up \nG1 X10.1 Y20 Z0.28 F5000.0 ;Move to start position\nM109 S205;\nG1 X10.1 Y200.0 Z0.28 F1500.0 E15 ;Draw the first line\nG1 X10.4 Y200.0 Z0.28 F5000.0 ;Move to side a little\nG1 X10.4 Y20 Z0.28 F1500.0 E30 ;Draw the second line\nG92 E0 ;Reset Extruder \nG1 X110 Y110 Z2.0 F3000 ;Move Z Axis up",
+	"machine_end_gcode": "M400 ; wait for buffer to clear\nG92 E0 ; zero the extruder\nG1 E-4.0 F3600; retract \nG91\nG1 Z3;\nM104 S0 ; turn off hotend\nM140 S0 ; turn off bed\nM106 S0 ; turn off fan\nG90 \nG0 X110 Y200 F3600 \nprint_end",
+	"layer_change_gcode": ";AFTER_LAYER_CHANGE\n;[layer_z]",
+	"before_layer_change_gcode": ";BEFORE_LAYER_CHANGE\n;[layer_z]\nG92 E0\n",
+	"machine_pause_gcode": "M601"
+}

resources/profiles/Printcepts/process/0.20mm Standard @BabyBelt Pro.json

@@ -0,0 +1,23 @@
+{
+	"type": "process",
+	"name": "0.20mm Standard @BabyBelt Pro",
+	"inherits": "fdm_process_common",
+	"from": "system",
+	"setting_id": "JGfGtqX6CWjCt437",
+	"instantiation": "true",
+	"layer_height": "0.2",
+	"initial_layer_print_height": "0.2",
+	"initial_layer_line_width": "0.42",
+	"wall_loops": "2",
+	"reduce_infill_retraction": "1",
+	"detect_overhang_wall": "1",
+	"skirt_loops": "0",
+	"skirt_distance": "0",
+	"sparse_infill_pattern": "grid",
+	"sparse_infill_speed": "200",
+	"support_base_pattern": "rectilinear",
+	"support_interface_pattern": "rectilinear",
+	"compatible_printers": [
+		"BabyBelt Pro 0.4 nozzle"
+	]
+}

resources/profiles/Printcepts/process/fdm_process_common.json

@@ -0,0 +1,108 @@
+{
+	"type": "process",
+	"name": "fdm_process_common",
+	"from": "system",
+	"instantiation": "false",
+	"adaptive_layer_height": "0",
+	"reduce_crossing_wall": "0",
+	"max_travel_detour_distance": "0",
+	"bottom_surface_pattern": "monotonic",
+	"bottom_shell_thickness": "0",
+	"bridge_speed": "50",
+	"brim_width": "5",
+	"brim_object_gap": "0.1",
+	"compatible_printers": [],
+	"compatible_printers_condition": "",
+	"print_sequence": "by layer",
+	"default_acceleration": "1000",
+	"initial_layer_acceleration": "500",
+	"top_surface_acceleration": "1000",
+	"travel_acceleration": "1000",
+	"inner_wall_acceleration": "1000",
+	"outer_wall_acceleration": "700",
+	"bridge_no_support": "0",
+	"draft_shield": "disabled",
+	"elefant_foot_compensation": "0",
+	"enable_arc_fitting": "0",
+	"wall_infill_order": "inner wall/outer wall/infill",
+	"infill_direction": "45",
+	"sparse_infill_density": "15%",
+	"sparse_infill_pattern": "crosshatch",
+	"initial_layer_print_height": "0.2",
+	"infill_combination": "0",
+	"infill_wall_overlap": "25%",
+	"interface_shells": "0",
+	"ironing_flow": "10%",
+	"ironing_spacing": "0.15",
+	"ironing_speed": "30",
+	"ironing_type": "no ironing",
+	"reduce_infill_retraction": "1",
+	"filename_format": "{input_filename_base}_{layer_height}mm_{filament_type[initial_tool]}_{printer_model}_{print_time}.gcode",
+	"detect_overhang_wall": "1",
+	"slowdown_for_curled_perimeters": "1",
+	"overhang_1_4_speed": "0",
+	"overhang_2_4_speed": "50",
+	"overhang_3_4_speed": "30",
+	"overhang_4_4_speed": "10",
+	"line_width": "110%",
+	"inner_wall_line_width": "110%",
+	"outer_wall_line_width": "100%",
+	"top_surface_line_width": "93.75%",
+	"sparse_infill_line_width": "110%",
+	"initial_layer_line_width": "120%",
+	"internal_solid_infill_line_width": "120%",
+	"support_line_width": "96%",
+	"wall_loops": "3",
+	"print_settings_id": "",
+	"raft_layers": "0",
+	"seam_position": "aligned",
+	"skirt_distance": "2",
+	"skirt_height": "3",
+	"min_skirt_length": "4",
+	"skirt_loops": "0",
+	"minimum_sparse_infill_area": "15",
+	"spiral_mode": "0",
+	"standby_temperature_delta": "-5",
+	"enable_support": "0",
+	"resolution": "0.012",
+	"support_type": "normal(auto)",
+	"support_on_build_plate_only": "0",
+	"support_top_z_distance": "0.2",
+	"support_bottom_z_distance": "0.2",
+	"support_filament": "0",
+	"support_interface_loop_pattern": "0",
+	"support_interface_filament": "0",
+	"support_interface_top_layers": "2",
+	"support_interface_bottom_layers": "2",
+	"support_interface_spacing": "0.5",
+	"support_interface_speed": "80",
+	"support_base_pattern": "default",
+	"support_base_pattern_spacing": "2.5",
+	"support_speed": "150",
+	"support_threshold_angle": "30",
+	"support_object_xy_distance": "0.35",
+	"tree_support_branch_angle": "30",
+	"tree_support_wall_count": "0",
+	"tree_support_with_infill": "0",
+	"detect_thin_wall": "0",
+	"top_surface_pattern": "monotonicline",
+	"top_shell_thickness": "0.8",
+	"enable_prime_tower": "1",
+	"wipe_tower_no_sparse_layers": "0",
+	"prime_tower_width": "60",
+	"xy_hole_compensation": "0",
+	"xy_contour_compensation": "0",
+	"layer_height": "0.2",
+	"bottom_shell_layers": "3",
+	"top_shell_layers": "4",
+	"bridge_flow": "1",
+	"initial_layer_speed": "45",
+	"initial_layer_infill_speed": "45",
+	"outer_wall_speed": "45",
+	"inner_wall_speed": "80",
+	"sparse_infill_speed": "150",
+	"internal_solid_infill_speed": "150",
+	"top_surface_speed": "50",
+	"gap_infill_speed": "30",
+	"travel_speed": "200"
+}

resources/shaders/110/gouraud.fs

@@ -26,6 +26,7 @@ struct SlopeDetection
     bool actived;
 	float normal_z;
     mat3 volume_world_normal_matrix;
+    vec3 up_direction;
 };
 
 uniform vec4 uniform_color;

resources/shaders/110/gouraud.vs

@@ -23,6 +23,7 @@ struct SlopeDetection
     bool actived;
 	float normal_z;
     mat3 volume_world_normal_matrix;
+    vec3 up_direction;
 };
 
 uniform mat4 view_model_matrix;
@@ -73,8 +74,8 @@ void main()
     // Point in homogenous coordinates.
     world_pos = volume_world_matrix * vec4(v_position, 1.0);
 
-    // z component of normal vector in world coordinate used for slope shading
+    // dot product of world normal with up direction, used for slope shading
-    world_normal_z = slope.actived ? (normalize(slope.volume_world_normal_matrix * v_normal)).z : 0.0;
+    world_normal_z = slope.actived ? dot(normalize(slope.volume_world_normal_matrix * v_normal), slope.up_direction) : 0.0;
 
     gl_Position = projection_matrix * position;
     if (is_outline) {

resources/shaders/110/mm_gouraud.fs

@@ -37,6 +37,7 @@ struct SlopeDetection
     bool actived;
 	 float normal_z;
     mat3 volume_world_normal_matrix;
+    vec3 up_direction;
 };
 uniform SlopeDetection slope;
 
@@ -85,7 +86,7 @@ void main()
               color = LightBlue;
               alpha = 1.0;
          }
-         else if( transformed_normal.z < slope.normal_z - EPSILON)
+         else if( dot(transformed_normal, slope.up_direction) < slope.normal_z - EPSILON)
         {
             color = color * 0.5 + LightRed * 0.5;
             alpha = 1.0;

resources/shaders/110/mm_gouraud.vs

@@ -24,6 +24,7 @@ struct SlopeDetection
     bool actived;
 	float normal_z;
     mat3 volume_world_normal_matrix;
+    vec3 up_direction;
 };
 uniform SlopeDetection slope;
 void main()

resources/shaders/140/gouraud.fs

@@ -29,6 +29,7 @@ struct SlopeDetection
     bool actived;
 	float normal_z;
     mat3 volume_world_normal_matrix;
+    vec3 up_direction;
 };
 
 uniform vec4 uniform_color;

resources/shaders/140/gouraud.vs

@@ -23,6 +23,7 @@ struct SlopeDetection
     bool actived;
 	float normal_z;
     mat3 volume_world_normal_matrix;
+    vec3 up_direction;
 };
 
 uniform mat4 view_model_matrix;
@@ -73,8 +74,8 @@ void main()
     // Point in homogenous coordinates.
     world_pos = volume_world_matrix * vec4(v_position, 1.0);
 
-    // z component of normal vector in world coordinate used for slope shading
+    // dot product of world normal with up direction, used for slope shading
-    world_normal_z = slope.actived ? (normalize(slope.volume_world_normal_matrix * v_normal)).z : 0.0;
+    world_normal_z = slope.actived ? dot(normalize(slope.volume_world_normal_matrix * v_normal), slope.up_direction) : 0.0;
 
     gl_Position = projection_matrix * position;
     if (is_outline) {

resources/shaders/140/mm_gouraud.fs

@@ -37,6 +37,7 @@ struct SlopeDetection
     bool actived;
 	 float normal_z;
     mat3 volume_world_normal_matrix;
+    vec3 up_direction;
 };
 uniform SlopeDetection slope;
 
@@ -87,7 +88,7 @@ void main()
               color = LightBlue;
               alpha = 1.0;
          }
-         else if( transformed_normal.z < slope.normal_z - EPSILON)
+         else if( dot(transformed_normal, slope.up_direction) < slope.normal_z - EPSILON)
         {
             color = color * 0.5 + LightRed * 0.5;
             alpha = 1.0;

resources/shaders/140/mm_gouraud.vs

@@ -24,6 +24,7 @@ struct SlopeDetection
     bool actived;
 	float normal_z;
     mat3 volume_world_normal_matrix;
+    vec3 up_direction;
 };
 uniform SlopeDetection slope;
 void main()

scripts/flatpak/com.orcaslicer.OrcaSlicer.yml

@@ -318,6 +318,12 @@ modules:
         sha256: 0ba163956f2d468b19a91b96c5aba66ee9610843ea41dda628ea44cdafde7db7
         dest: external-packages/wxInspector
 
+      # FFmpeg n7.0.3
+      - type: file
+        url: https://github.com/FFmpeg/FFmpeg/archive/refs/tags/n7.0.3.tar.gz
+        sha256: deedcabe339165214a3637df4c86a507aef0d793cf8774ff68735f4737e8ddbc
+        dest: external-packages/FFMPEG
+
       # ---------------------------------------------------------------
       # Fallback archives for deps normally provided by the GNOME SDK.
       # These are only used if find_package() fails to locate them.

scripts/linux.d/arch

@@ -25,6 +25,9 @@ export REQUIRED_DEV_PACKAGES=(
     wayland-protocols
     webkit2gtk-4.1
     wget
+    pkgconf
+    yasm
+    nasm
 )
 
 if [[ -n "$UPDATE_LIB" ]]

scripts/linux.d/cachyos

@@ -25,6 +25,9 @@ export REQUIRED_DEV_PACKAGES=(
     wayland-protocols
     webkit2gtk
     wget
+    pkgconf
+    yasm
+    nasm
 )
 
 if [[ -n "$UPDATE_LIB" ]]

scripts/linux.d/clear-linux-os

@@ -20,6 +20,7 @@ export REQUIRED_BUNDLES=(
     perl-basic
     texinfo
     wget
+    nasm
 )
 
 if [[ -n "$UPDATE_LIB" ]]

scripts/linux.d/debian

@@ -27,6 +27,9 @@ REQUIRED_DEV_PACKAGES=(
     ninja-build
     texinfo
     wget
+    pkgconf
+    yasm
+    nasm
 )
 
 if [[ -n "$UPDATE_LIB" ]]

scripts/linux.d/fedora

@@ -31,6 +31,9 @@ REQUIRED_DEV_PACKAGES=(
     webkit2gtk4.1-devel
     wget
     libcurl-devel
+    pkgconf
+    yasm
+    nasm
 )
 
 if [[ -n "$UPDATE_LIB" ]]

scripts/linux.d/gentoo

@@ -32,6 +32,9 @@ REQUIRED_DEV_PACKAGES=(
     sys-devel/m4
     virtual/libudev
     x11-libs/gtk+:3
+    dev-util/pkgconf
+    dev-lang/yasm
+    dev-lang/nasm
 )
 
 if [[ -n "$UPDATE_LIB" ]]

scripts/linux.d/suse

@@ -30,6 +30,9 @@ REQUIRED_DEV_PACKAGES=(
     webkit2gtk4-devel
     wget
     libcurl-devel
+    pkgconf
+    yasm
+    nasm
 )
 
 if [[ -n "$UPDATE_LIB" ]]

src/CMakeLists.txt

@@ -90,6 +90,12 @@ if (SLIC3R_GUI)
 #    list(REMOVE_ITEM wxWidgets_LIBRARIES oleacc)
 
     find_package(wxInspector REQUIRED)
+    # wxInspector 1.0.0 installs its headers but accidentally declares the
+    # INSTALL_INTERFACE include directory PRIVATE, so its imported target does
+    # not expose them to consumers. Restore the package prefix include path until
+    # the upstream export is fixed.
+    get_filename_component(WXINSPECTOR_PREFIX "${wxInspector_DIR}/../../.." ABSOLUTE)
+    target_include_directories(wxInspector::wxInspector INTERFACE "${WXINSPECTOR_PREFIX}/include")
     list(APPEND wxWidgets_LIBRARIES "wxInspector::wxInspector")
 
     message(STATUS "wx libs: ${wxWidgets_LIBRARIES}")
@@ -175,7 +181,7 @@ endif ()
 # Add the Slic3r GUI library, libcurl, OpenGL and GLU libraries.
 if (SLIC3R_GUI)
 #    target_link_libraries(OrcaSlicer ws2_32 uxtheme setupapi libslic3r_gui ${wxWidgets_LIBRARIES})
-target_link_libraries(OrcaSlicer libslic3r_gui)
+target_link_libraries(OrcaSlicer libslic3r_gui wxInspector::wxInspector)
     if (MSVC)
         # Generate debug symbols even in release mode.
         target_link_options(OrcaSlicer PUBLIC "$<$<CONFIG:RELEASE>:/DEBUG>")
@@ -294,6 +300,16 @@ if (WIN32)
     endif()
 
 else ()
+    if (NOT APPLE)
+        set(output_sos_Release "")
+        set(output_sos_Debug "")
+        add_custom_target(OrcaSlicerSosCopy ALL DEPENDS OrcaSlicer)
+        if ("${CMAKE_BUILD_TYPE}" STREQUAL "Debug")
+            orcaslicer_copy_sos(OrcaSlicerSosCopy "Debug" "d" output_sos_Debug)
+        else()
+            orcaslicer_copy_sos(OrcaSlicerSosCopy "Release" "" output_sos_Release)
+        endif()
+    endif()
     if (APPLE AND NOT CMAKE_MACOSX_BUNDLE)
         # On OSX, the name of the binary matches the name of the Application.
         add_custom_command(TARGET OrcaSlicer POST_BUILD
@@ -372,5 +388,9 @@ if (WIN32)
     install(FILES ${output_dlls_${build_type}} DESTINATION ".")
     install(DIRECTORY "${CMAKE_PREFIX_PATH}/libpython/" DESTINATION "python")
 else ()
+    if (APPLE)
+    else()
+        install(FILES ${output_sos_${build_type}} DESTINATION "${CMAKE_INSTALL_PREFIX}")
+    endif()
     install(TARGETS OrcaSlicer RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}" BUNDLE DESTINATION ${CMAKE_INSTALL_BINDIR})
 endif ()

src/OrcaSlicer.cpp

@@ -3685,6 +3685,10 @@ int CLI::run(int argc, char **argv)
         BOOST_LOG_TRIVIAL(info) << boost::format("%1%, set disable_wipe_tower_after_mapping back to false due to wrapping detect")%__LINE__;
     }
 
+    // Belt printers never get the classic wipe tower (see Print::has_wipe_tower()), so reserve no space for it.
+    const ConfigOptionBool* belt_printer_opt = m_print_config.option<ConfigOptionBool>("belt_printer");
+    const bool is_belt_printer = belt_printer_opt && belt_printer_opt->value;
+
     auto timelapse_type_opt = m_print_config.option("timelapse_type");
     bool is_smooth_timelapse = false;
     if (enable_timelapse && timelapse_type_opt && (timelapse_type_opt->getInt() == TimelapseType::tlSmooth))
@@ -3908,11 +3912,11 @@ int CLI::run(int argc, char **argv)
         }
     };
 
-    auto check_plate_wipe_tower = [get_print_sequence, is_smooth_timelapse, new_extruder_count](Slic3r::GUI::PartPlate* plate, int plate_index, DynamicPrintConfig& print_config, plate_obj_size_info_t &plate_obj_size_info) {
+    auto check_plate_wipe_tower = [get_print_sequence, is_smooth_timelapse, is_belt_printer, new_extruder_count](Slic3r::GUI::PartPlate* plate, int plate_index, DynamicPrintConfig& print_config, plate_obj_size_info_t &plate_obj_size_info) {
         plate_obj_size_info.obj_bbox= plate->get_objects_bounding_box();
         BOOST_LOG_TRIVIAL(info) << boost::format("plate %1%, object bbox: min {%2%, %3%, %4%} - max {%5%, %6%, %7%}")
                     %(plate_index+1) %plate_obj_size_info.obj_bbox.min.x() % plate_obj_size_info.obj_bbox.min.y() % plate_obj_size_info.obj_bbox.min.z() %plate_obj_size_info.obj_bbox.max.x() % plate_obj_size_info.obj_bbox.max.y() % plate_obj_size_info.obj_bbox.max.z();
-        if (!print_config.has("wipe_tower_x")) {
+        if (is_belt_printer || !print_config.has("wipe_tower_x")) {
             plate_obj_size_info.has_wipe_tower = false;
             BOOST_LOG_TRIVIAL(info) << boost::format("can not found wipe_tower_x in config, set to no wipe tower");
             return;
@@ -4722,7 +4726,7 @@ int CLI::run(int argc, char **argv)
                     }
                 }
 
-                if (!arrange_cfg.is_seq_print && (assemble_plate.filaments_count > 1)||(enable_wrapping_detect && !current_wrapping_exclude_area.empty()))
+                if (!is_belt_printer && (!arrange_cfg.is_seq_print && (assemble_plate.filaments_count > 1)||(enable_wrapping_detect && !current_wrapping_exclude_area.empty())))
                 {
                     //prepare the wipe tower
                     int plate_count = partplate_list.get_plate_count();
@@ -4867,7 +4871,7 @@ int CLI::run(int argc, char **argv)
                 bool is_seq_print = false;
                 get_print_sequence(cur_plate, m_print_config, is_seq_print);
 
-                if (!is_seq_print && (assemble_plate.filaments_count > 1) && !has_wipe_tower_position)
+                if (!is_belt_printer && !is_seq_print && (assemble_plate.filaments_count > 1) && !has_wipe_tower_position)
                 {
                     //prepare the wipe tower
                     auto printer_structure_opt = m_print_config.option<ConfigOptionEnum<PrinterStructure>>("printer_structure");
@@ -5016,7 +5020,7 @@ int CLI::run(int argc, char **argv)
                     //add the virtual object into unselect list if has
                     partplate_list.preprocess_exclude_areas(unselected, enable_wrapping_detect);
 
-                    if (used_filament_set.size() > 0)
+                    if (!is_belt_printer && used_filament_set.size() > 0)
                     {
                         //prepare the wipe tower
                         int plate_count = partplate_list.get_plate_count();
@@ -5119,7 +5123,7 @@ int CLI::run(int argc, char **argv)
                         BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << boost::format(": found single object mode");
                     }
 
-                    if (m_print_config.has("wipe_tower_x") && (is_smooth_timelapse || !arrange_cfg.is_seq_print || (selected.size() <= 1))) {
+                    if (!is_belt_printer && m_print_config.has("wipe_tower_x") && (is_smooth_timelapse || !arrange_cfg.is_seq_print || (selected.size() <= 1))) {
                         float x;
                         float y;
                         if (duplicate_count > 0) {

src/dev-utils/platform/unix/build_linux_image.sh.in

@@ -83,6 +83,10 @@ copy_shared_object_to_dir() {
     src_real="$(readlink -f "$src")"
     dst_name="$(basename "$src_real")"
     mkdir -p "$dst_dir"
+    if [ "$src_real" = "$dst_dir/$dst_name" ]; then
+        # Already bundled; the dependency resolved from the bundle directory.
+        return 0
+    fi
     cp -fL "$src_real" "$dst_dir/$dst_name"
 
     if [ -L "$src" ]; then
@@ -96,12 +100,23 @@ copy_shared_object_to_dir() {
 }
 
 bundle_dependency_closure() {
-    local dst_dir="$1"
+    local dst_dir
+    dst_dir="$(cd -- "$1" && pwd)"
     shift
 
     local -a queue=("$@")
-    local target dep dep_real copied_path
+    local target dep dep_real dep_key copied_path
     declare -A seen=()
+    # Dependencies are resolved with ldd, which only searches the default
+    # loader path. Deps-built shared libraries (e.g. the FFmpeg stack) are not
+    # installed there and carry no RUNPATH of their own, so once copied into
+    # the bundle ldd can no longer resolve one sibling from another
+    # (libavcodec -> libavutil) and reports it as missing. Extend the loader
+    # path with the bundle directory plus the source directories of files
+    # already bundled, so every library that was resolved once keeps resolving
+    # for its own dependencies. The audit script does the same
+    # (scripts/check_appimage_libs.sh).
+    local -a search_dirs=("$dst_dir")
 
     while [ ${#queue[@]} -gt 0 ]; do
         target="${queue[0]}"
@@ -122,17 +137,24 @@ bundle_dependency_closure() {
                 continue
             fi
 
-            if [ -n "${seen[$dep_real]}" ]; then
+            # Key dedup on the bundled file rather than the source path: once
+            # ldd resolves a library from the bundle directory (via the
+            # LD_LIBRARY_PATH above) its path is a dst_dir path, which differs
+            # from the source path the first resolution returned. Keying on
+            # the source path would re-copy the file onto itself.
+            dep_key="$dst_dir/$(basename "$dep_real")"
+            if [ -n "${seen[$dep_key]}" ]; then
                 continue
             fi
 
-            seen[$dep_real]=1
+            seen[$dep_key]=1
             copy_shared_object_to_dir "$dep" "$dst_dir"
+            search_dirs+=("$(dirname "$dep_real")")
             copied_path="$dst_dir/$(basename "$dep_real")"
             if [ -e "$copied_path" ]; then
                 queue+=("$copied_path")
             fi
-        done < <(appimage_list_direct_dependencies "$target")
+        done < <(LD_LIBRARY_PATH="$(IFS=:; printf '%s' "${search_dirs[*]}")${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}" appimage_list_direct_dependencies "$target")
     done
 }
 

src/libslic3r/AABBTreeIndirect.hpp

@@ -229,7 +229,7 @@ public:
         m_bbox(bbox.min - Point(SCALED_EPSILON, SCALED_EPSILON), bbox.max + Point(SCALED_EPSILON, SCALED_EPSILON)) {}
     size_t             idx() const { return m_idx; }
     const BoundingBox& bbox() const { return m_bbox; }
-    Point              centroid() const { return (m_bbox.min() + m_bbox.max() / 2); }
+    Point              centroid() const { return (m_bbox.min() + m_bbox.max()) / 2; }
 private:
     size_t             m_idx;
     BoundingBox		   m_bbox;

src/libslic3r/ArcFitter.cpp

@@ -57,24 +57,24 @@ void ArcFitter::do_arc_fitting(const Points& points, std::vector<PathFittingData
             //BBS: can be fit as arc, then save arc data temperarily
             last_arc = target_arc;
             if (back_index == points.size() - 1) {
-                result.emplace_back(std::move(PathFittingData{ front_index,
+                result.emplace_back(PathFittingData{ front_index,
                                    back_index,
                                    last_arc.direction == ArcDirection::Arc_Dir_CCW ? EMovePathType::Arc_move_ccw : EMovePathType::Arc_move_cw,
-                                   last_arc }));
+                                   last_arc });
                 front_index = back_index;
             }
         } else {
             if (back_index - front_index > 2) {
                 //BBS: althought current point_stack can't be fit as arc,
                 //but previous must can be fit if removing the top in stack, so save last arc
-                result.emplace_back(std::move(PathFittingData{ front_index,
+                result.emplace_back(PathFittingData{ front_index,
                                    back_index - 1,
                                    last_arc.direction == ArcDirection::Arc_Dir_CCW ? EMovePathType::Arc_move_ccw : EMovePathType::Arc_move_cw,
-                                   last_arc }));
+                                   last_arc });
             } else {
                 //BBS: save the first segment as line move when 3 point-line can't be fit as arc move
                 if (result.empty() || result.back().path_type != EMovePathType::Linear_move)
-                    result.emplace_back(std::move(PathFittingData{front_index, front_index + 1, EMovePathType::Linear_move, ArcSegment()}));
+                    result.emplace_back(PathFittingData{front_index, front_index + 1, EMovePathType::Linear_move, ArcSegment()});
                 else if(result.back().path_type == EMovePathType::Linear_move)
                     result.back().end_point_index = front_index + 1;
             }
@@ -87,7 +87,7 @@ void ArcFitter::do_arc_fitting(const Points& points, std::vector<PathFittingData
 	//BBS: handle the remain data
     if (front_index != back_index) {
         if (result.empty() || result.back().path_type != EMovePathType::Linear_move)
-            result.emplace_back(std::move(PathFittingData{front_index, back_index, EMovePathType::Linear_move, ArcSegment()}));
+            result.emplace_back(PathFittingData{front_index, back_index, EMovePathType::Linear_move, ArcSegment()});
         else if (result.back().path_type == EMovePathType::Linear_move)
             result.back().end_point_index = back_index;
     }

src/libslic3r/BeltBrim.cpp

@@ -0,0 +1,516 @@
+#include "BeltBrim.hpp"
+
+#include "ClipperUtils.hpp"
+#include "Flow.hpp"
+#include "Layer.hpp"
+#include "Polygon.hpp"
+#include "Print.hpp"
+#include "ShortestPath.hpp"
+#include "Support/BeltFloorContext.hpp"
+
+#include <algorithm>
+
+namespace Slic3r {
+
+// ---------------------------------------------------------------- scaling
+
+static inline Point scale_u_point(const Point &p, int from_axis, double factor)
+{
+    // llround, not a cast: casting truncates toward zero, so a round trip would
+    // walk every vertex toward the origin by up to one unit per pass.
+    return from_axis == 0 ?
+        Point(coord_t(std::llround(double(p.x()) * factor)), p.y()) :
+        Point(p.x(), coord_t(std::llround(double(p.y()) * factor)));
+}
+
+static inline void scale_u_polygon(Polygon &poly, int from_axis, double factor)
+{
+    for (Point &p : poly.points)
+        p = scale_u_point(p, from_axis, factor);
+}
+
+ExPolygons belt_scale_u(const ExPolygons &src, const BeltBrimFrame &frame, double factor)
+{
+    ExPolygons out = src;
+    for (ExPolygon &ex : out) {
+        scale_u_polygon(ex.contour, frame.from_axis, factor);
+        for (Polygon &hole : ex.holes)
+            scale_u_polygon(hole, frame.from_axis, factor);
+    }
+    return out;
+}
+
+Polylines belt_scale_u(const Polylines &src, const BeltBrimFrame &frame, double factor)
+{
+    Polylines out = src;
+    for (Polyline &pl : out)
+        for (Point &p : pl.points)
+            p = scale_u_point(p, frame.from_axis, factor);
+    return out;
+}
+
+// ---------------------------------------------------------------- sweep
+
+ExPolygons sweep_ex(const ExPolygons &src, const Point &t)
+{
+    if (src.empty())
+        return {};
+    if (t == Point(0, 0))
+        return src;
+
+    // One parallelogram per boundary edge.  Together with P and P + t these
+    // cover the Minkowski sum exactly: for any q = p + s*t with p in P and
+    // s in [0, 1], let s* be the smallest lambda >= 0 with q - lambda*t in P.
+    // Either s* == 0 (so q is in P) or q - s* * t lies on some boundary edge e,
+    // putting q in that edge's parallelogram.  Hole edges must be included, or
+    // holes narrower than t along t would wrongly survive the sweep.
+    Polygons quads;
+    for (const ExPolygon &ex : src)
+        for (size_t c = 0; c < ex.num_contours(); ++ c)
+            for (const Line &e : ex.contour_or_hole(c).lines()) {
+                if (e.a == e.b)
+                    continue;
+                Polygon q;
+                q.points = { e.a, e.b, e.b + t, e.a + t };
+                // The non-zero fill rule counts a clockwise ring as -1, which
+                // would punch a hole instead of adding material.  Edges parallel
+                // to t give a zero-area quad; Clipper discards those harmlessly.
+                if (q.is_clockwise())
+                    q.reverse();
+                quads.emplace_back(std::move(q));
+            }
+
+    ExPolygons shifted = src;
+    for (ExPolygon &ex : shifted)
+        ex.translate(t);
+
+    // union_ex(ExPolygons, Polygons) uses pftNonZero, which is the fill rule the
+    // argument above relies on.
+    return union_ex(union_ex(src, shifted), quads);
+}
+
+// ---------------------------------------------------------------- brim region
+
+ExPolygons belt_brim_region(const ExPolygons    &footprint_flat,
+                            bool                 has_outer,
+                            bool                 has_inner,
+                            coord_t              brim_width,
+                            coord_t              object_gap,
+                            coord_t              leading,
+                            coord_t              lateral,
+                            const BeltBrimFrame &frame)
+{
+    if (footprint_flat.empty() || (! has_outer && ! has_inner))
+        return {};
+
+    ExPolygons out;
+
+    if (has_outer) {
+        // Offset the outer ring from the contours only, so a hole cannot punch
+        // through it.  Same reasoning as the plate brim in Brim.cpp.
+        Polygons contours;
+        contours.reserve(footprint_flat.size());
+        for (const ExPolygon &ex : footprint_flat)
+            contours.emplace_back(ex.contour);
+
+        // Inner and outer boundary offset from the same polygon, to avoid
+        // round-off mismatch between them.
+        ExPolygons inner = offset_ex(contours, float(object_gap), jtRound, SCALED_RESOLUTION);
+
+        // Close the interior before offsetting outwards.  A belt contact patch is often a
+        // narrow, broken-up strip, and the offset rings of two islands less than
+        // 2 x brim_width apart merge and fill the space between them - space that lies
+        // UNDER the part, which is not what "outer brim" means.  Closing also swallows
+        // holes in the patch for the same reason.  Concavity-filling only, so an apron or
+        // any other outward protrusion is untouched.
+        ExPolygons envelope = brim_width > 0 ? closing_ex(inner, float(brim_width)) : inner;
+
+        ExPolygons base  = envelope;
+        if (leading > 0) {
+            // Sweep downhill from the gapped keep-out, so the apron is contiguous with
+            // the ring instead of starting inside the gap.
+            const Point t = frame.from_axis == 0 ?
+                Point(frame.downhill_sign() * leading, 0) :
+                Point(0, frame.downhill_sign() * leading);
+            base = union_ex(base, sweep_ex(envelope, t));
+        }
+        if (lateral > 0) {
+            // Across the belt, both ways.  Swept from `base` so the apron is widened
+            // too, and in the flattened frame the cross-belt axis is unscaled, so this
+            // distance is already a true on-belt distance.
+            const Point t = frame.from_axis == 0 ? Point(0, lateral) : Point(lateral, 0);
+            ExPolygons widened = union_ex(sweep_ex(base, t), sweep_ex(base, Point(-t.x(), -t.y())));
+            base = union_ex(base, to_polygons(widened));
+        }
+        ExPolygons outer = offset_ex(base, float(brim_width), jtRound, SCALED_RESOLUTION);
+        expolygons_append(out, diff_ex(outer, envelope));
+    }
+
+    if (has_inner) {
+        // Holes reversed so a negative offset grows inward, mirroring Brim.cpp.
+        // No apron here: an apron growing into a hole interior is never useful.
+        Polygons holes;
+        for (const ExPolygon &ex : footprint_flat)
+            polygons_append(holes, ex.holes);
+        polygons_reverse(holes);
+        if (! holes.empty()) {
+            ExPolygons hole_inner = offset_ex(holes, - float(brim_width + object_gap));
+            ExPolygons hole_outer = offset_ex(holes, - float(object_gap));
+            expolygons_append(out, intersection_ex(diff_ex(hole_outer, hole_inner), holes));
+        }
+    }
+
+    return union_ex(out);
+}
+
+// ---------------------------------------------------------------- line lattice
+
+std::vector<coord_t> belt_brim_line_positions(coord_t u_lo,
+                                              coord_t u_hi,
+                                              coord_t pitch_u,
+                                              coord_t u_anchor)
+{
+    std::vector<coord_t> out;
+    if (pitch_u <= 0 || u_hi <= u_lo)
+        return out;
+
+    // Walk the lattice from just below u_lo.  Integer arithmetic throughout, so
+    // the half-open interval needs no epsilon: a point landing exactly on u_hi
+    // belongs to the next band.
+    int64_t k = int64_t(std::floor(double(u_lo - u_anchor) / double(pitch_u))) - 1;
+    while (u_anchor + coord_t(k) * pitch_u < u_lo)
+        ++ k;
+    for (;; ++ k) {
+        const coord_t u = u_anchor + coord_t(k) * pitch_u;
+        if (u >= u_hi)
+            break;
+        out.emplace_back(u);
+    }
+    return out;
+}
+
+// ---------------------------------------------------------------- pipeline
+
+// A band of the belt surface as an explicit box, clamped to `bounds` along the
+// shear axis.  Deliberately not BeltFloorContext::surface_polygon(): those
+// half-planes span +-1000 mm, which is wasteful to clip against and dangerous to
+// feed through the flattening scale.
+static Polygon band_box(const BoundingBox &bounds, int from_axis, coordf_t u_lo, coordf_t u_hi)
+{
+    coord_t lo = scale_(u_lo);
+    coord_t hi = scale_(u_hi);
+    const coord_t bmin = from_axis == 0 ? bounds.min.x() : bounds.min.y();
+    const coord_t bmax = from_axis == 0 ? bounds.max.x() : bounds.max.y();
+    lo = std::max(lo, bmin);
+    hi = std::min(hi, bmax);
+    Polygon poly;
+    if (hi <= lo)
+        return poly;
+    if (from_axis == 0)
+        poly.points = { Point(lo, bounds.min.y()), Point(hi, bounds.min.y()),
+                        Point(hi, bounds.max.y()), Point(lo, bounds.max.y()) };
+    else
+        poly.points = { Point(bounds.min.x(), lo), Point(bounds.max.x(), lo),
+                        Point(bounds.max.x(), hi), Point(bounds.min.x(), hi) };
+    return poly;
+}
+
+// Everything the per-band line generator needs, gathered once per object.
+struct BeltBrimContext
+{
+    BeltFloorContext ctx;
+    BeltBrimFrame    frame;
+    ExPolygons       region;      // brim region, object-local slicing XY
+    BoundingBox      region_bbox;
+    Flow             brim_flow;
+    coord_t          pitch_u   = 0;
+    coord_t          u_anchor  = 0;
+    double           in_plane_pitch = 0.;   // mm
+};
+
+// Emit the cross-belt brim lines that belong to the band [print_z - height, print_z].
+static void belt_brim_band_paths(const BeltBrimContext      &bc,
+                                 coordf_t                    print_z,
+                                 coordf_t                    height,
+                                 const Polygons             &obstacles,
+                                 ExtrusionEntityCollection  &out,
+                                 ExPolygons                 &areas_out)
+{
+    coordf_t u_lo = bc.ctx.cutoff_u(print_z - height);
+    coordf_t u_hi = bc.ctx.cutoff_u(print_z);
+    if (u_lo > u_hi)
+        std::swap(u_lo, u_hi);
+
+    // How wide this band is measured ON the belt, versus one nominal bead.
+    const double band_in_plane = (u_hi - u_lo) * bc.frame.u_stretch();
+
+    // Fraction of the layer height at which a line sits above the belt.  Toward the
+    // downhill edge, so the sheet is reasonably thick while the nozzle stays clear of
+    // the belt itself.
+    static constexpr double BAND_CLEARANCE_FRACTION = 0.75;
+
+    std::vector<coord_t> us;
+    double uniform_clearance = 0.;   // 0 => derive per line from its own position
+    double line_pitch        = bc.in_plane_pitch;
+    if (band_in_plane <= bc.in_plane_pitch + EPSILON) {
+        // Steep belt, which is the normal case: the band is narrower than one bead, so
+        // exactly one line fits.  Place it at a FIXED fraction of the band rather than
+        // on a nominal-spacing lattice.  On a lattice each line lands at an arbitrary
+        // point in its band, the clearance sweeps [0, height] from band to band, and the
+        // bead width therefore varies by 2x - visible as ragged, uneven brim lines.
+        // Anchoring to the band makes the clearance identical everywhere, so every bead
+        // is the same width.
+        //
+        // The spacing is then whatever the bands give (height / sin(tilt) on the belt)
+        // rather than the nominal bead spacing, so the flow below is matched to THAT
+        // pitch.  Matched flow at the real pitch is what keeps the sheet uniform and
+        // gap-free; using nominal flow at band spacing would over-feed it.
+        us.push_back(scale_(bc.ctx.cutoff_u(print_z - BAND_CLEARANCE_FRACTION * height)));
+        uniform_clearance = BAND_CLEARANCE_FRACTION * height;
+        line_pitch        = band_in_plane;
+    } else {
+        // Shallow belt: the band is wider than a bead, so it takes several lines and they
+        // have to sit on the nominal lattice.  Their clearances then differ, and so do
+        // their widths - unavoidable here, but shallow belts are the rare case.
+        us = belt_brim_line_positions(scale_(u_lo), scale_(u_hi), bc.pitch_u, bc.u_anchor);
+    }
+    if (us.empty())
+        return;
+
+    const Polygons region_polys = to_polygons(bc.region);
+
+    // One lattice line at a time: the clearance - and therefore the extrusion
+    // volume - is a property of the line's u, so the pieces of different lines
+    // must not be pooled before the flow is resolved.
+    // Overshoot the region so the clip, not the line's ends, decides the extent.
+    const coord_t margin = coord_t(SCALED_EPSILON) + 1;
+    for (const coord_t u : us) {
+        Polyline line;
+        if (bc.frame.from_axis == 0)
+            line.points = { Point(u, coord_t(bc.region_bbox.min.y() - margin)),
+                            Point(u, coord_t(bc.region_bbox.max.y() + margin)) };
+        else
+            line.points = { Point(coord_t(bc.region_bbox.min.x() - margin), u),
+                            Point(coord_t(bc.region_bbox.max.x() + margin), u) };
+
+        Polylines pieces = intersection_pl(Polylines{ line }, region_polys);
+        if (! obstacles.empty())
+            pieces = diff_pl(pieces, obstacles);
+        if (pieces.empty())
+            continue;
+
+        // Nozzle-to-belt clearance for this line.  Constant along the line, because the
+        // belt height depends only on the shear-axis coordinate.  Band-anchored lines
+        // share one clearance by construction; lattice lines (shallow belts) each get
+        // their own, clamped so neither end of a band yields an unprintable bead.
+        double clearance = uniform_clearance;
+        if (clearance <= 0.) {
+            const Point probe = bc.frame.from_axis == 0 ? Point(u, 0) : Point(0, u);
+            clearance = print_z - bc.ctx.floor_print_z(probe);
+            clearance = std::min(std::max(clearance, 0.5 * height), height);
+        }
+
+        // with_cross_section, not with_height: it reaches the prescribed volume while
+        // KEEPING the extrusion spacing, so the bead is sized to fill exactly one
+        // pitch x clearance cell of the sheet.
+        const Flow f = bc.brim_flow.with_cross_section(float(line_pitch * clearance));
+
+        // Footprint of these beads, for the first-layer convex hull and bbox.
+        for (const Polygon &p : offset(pieces, 0.5f * float(f.scaled_width())))
+            areas_out.emplace_back(ExPolygon(p));
+
+        extrusion_entities_append_paths(out.entities, chain_polylines(std::move(pieces)),
+                                        erBrim, f.mm3_per_mm(), f.width(), float(clearance));
+    }
+}
+
+// Union of everything extruded at `print_z` that the brim must keep clear of, expressed
+// in `self`'s local slicing frame.  Includes `self` itself: its slice at this Z can
+// overhang outside the belt footprint and land in the brim ring, which the flattened
+// brim_object_gap - a belt-plane separation - does not cover.
+//
+// THREADING: this runs inside posSupportMaterial, which Print::process() executes for all
+// objects in a tbb::parallel_for (Print.cpp).  Object slices are finished by then and safe
+// to read across objects, but SUPPORT layers are not: another object's thread may be
+// inside clear_support_layers() - which deletes the SupportLayer pointers - right now, so
+// touching a foreign object's support_layers() here is a use-after-free.  Only this
+// object's own supports are consulted; they are complete, because make_belt_brim() runs at
+// the tail of this object's own generate_support_material().  The cost is that the brim
+// does not dodge a *different* object's support at the same Z, which needs the objects to
+// overlap in the belt direction in the first place.
+// `region_bbox` bounds the brim; anything outside it cannot clip a brim line, so whole
+// objects are skipped without materialising their polygons.  On a typical plate the
+// objects do not overlap and every foreign object drops out here, which matters because
+// this runs once per band - hundreds of times per object.
+static Polygons belt_brim_obstacles(const Print &print, const PrintObject &self,
+                                    const BoundingBox &region_bbox, coordf_t print_z, coordf_t tol)
+{
+    const Point shift_self = self.instances().empty() ? Point(0, 0)
+                                                      : self.instances().front().shift_without_plate_offset();
+    Polygons out;
+    for (const PrintObject *o : print.objects()) {
+        const bool is_self = (o == &self);
+        for (const PrintInstance &inst : o->instances()) {
+            const Point delta = inst.shift_without_plate_offset() - shift_self;
+            if (const Layer *l = o->get_layer_at_printz(print_z, tol)) {
+                BoundingBox lb = get_extents(l->lslices);
+                lb.translate(delta.x(), delta.y());
+                if (lb.overlap(region_bbox)) {
+                    Polygons ps = to_polygons(l->lslices);
+                    for (Polygon &p : ps)
+                        p.translate(delta);
+                    polygons_append(out, std::move(ps));
+                }
+            }
+            if (! is_self)
+                continue;
+            if (const SupportLayer *sl = o->get_support_layer_at_printz(print_z, tol)) {
+                Polygons ps = sl->support_fills.polygons_covered_by_spacing();
+                for (Polygon &p : ps)
+                    p.translate(delta);
+                polygons_append(out, std::move(ps));
+            }
+        }
+    }
+    if (out.size() < 2)
+        return out;   // union_() of 0 or 1 polygons is pure overhead
+    return union_(out);
+}
+
+void make_belt_brim(PrintObject &object)
+{
+    object.clear_belt_brim();
+    if (! object.has_belt_brim())
+        return;
+
+    const Print &print = *object.print();
+    BeltBrimContext bc;
+    if (! bc.ctx.init(object.slicing_parameters(), print.config()))
+        return;
+    bc.frame = BeltBrimFrame{ bc.ctx.shear_factor(), bc.ctx.from_axis() };
+
+    const size_t nlayers = object.layers().size();
+    if (nlayers == 0)
+        return;
+
+    // 1. Belt footprint: the union of each layer's slice clipped to that layer's
+    //    own contact band.  This is the object's bottom face, which on a belt is
+    //    spread over every layer instead of sitting in layer 0.
+    ExPolygons footprint_acc;
+    for (size_t i = 0; i < nlayers; ++ i) {
+        const Layer &layer = *object.layers()[i];
+        if (layer.lslices.empty())
+            continue;
+        // print_z - height, not the previous layer's print_z: variable layer
+        // heights make the latter wrong.
+        coordf_t u_lo = bc.ctx.cutoff_u(layer.print_z - layer.height);
+        coordf_t u_hi = bc.ctx.cutoff_u(layer.print_z);
+        if (u_lo > u_hi)
+            std::swap(u_lo, u_hi);
+        BoundingBox bb = get_extents(layer.lslices);
+        bb.offset(scale_(1.));
+        const Polygon band = band_box(bb, bc.frame.from_axis, u_lo, u_hi);
+        if (band.empty())
+            continue;
+        expolygons_append(footprint_acc, intersection_ex(layer.lslices, Polygons{ band }));
+    }
+    const ExPolygons footprint = union_ex(footprint_acc);
+    if (footprint.empty())
+        return;
+
+    // 2. Brim region, offset in the flattened (true on-belt) metric.
+    const PrintObjectConfig &cfg = object.config();
+    bc.brim_flow = print.brim_flow();
+    const double  flow_w = bc.brim_flow.scaled_spacing() * SCALING_FACTOR;
+    // Quantize to an even number of lines, as the plate brim does.
+    const coord_t width   = scale_(std::floor(cfg.brim_width.value / flow_w / 2) * flow_w * 2);
+    const coord_t leading = scale_(cfg.leading_brim_length.value);
+    const coord_t lateral = scale_(cfg.extra_brim_width.value);
+    const coord_t gap     = scale_(cfg.brim_object_gap.value);
+
+    // Belt printers collapse Auto / Mouse ear / Painted to outer-only: the auto width
+    // heuristic and flat ear discs have no meaning on a tilted plane.  Leading-edge-only
+    // is an outer brim too; it is narrowed down to the first contact below.
+    const BrimType bt = cfg.brim_type.value;
+    const bool has_outer = bt == btOuterOnly || bt == btOuterAndInner
+                        || bt == btAutoBrim  || bt == btEar || bt == btPainted
+                        || bt == btLeadingEdgeOnly;
+    const bool has_inner = bt == btInnerOnly || bt == btOuterAndInner;
+
+    bc.region = belt_unflatten(
+        belt_brim_region(belt_flatten(footprint, bc.frame), has_outer, has_inner,
+                         width, gap, leading, lateral, bc.frame),
+        bc.frame);
+
+    if (bt == btLeadingEdgeOnly && ! bc.region.empty()) {
+        // Keep only what lies at or downhill of the object's FIRST contact with the
+        // belt, so the part is supported as it lands and nothing is printed alongside
+        // it afterwards.  The cut is the uphill edge of the first layer's contact band:
+        // everything past it belongs to later contacts.
+        const coordf_t u_cut   = bc.ctx.cutoff_u(object.layers().front()->print_z);
+        BoundingBox    keep_bb = get_extents(bc.region);
+        keep_bb.offset(scale_(1.));
+        const bool     low_side = bc.frame.shear > 0.;   // downhill is -u
+        const Polygon  keep = band_box(keep_bb, bc.frame.from_axis,
+            low_side ? unscale<double>(bc.frame.from_axis == 0 ? keep_bb.min.x() : keep_bb.min.y()) : u_cut,
+            low_side ? u_cut : unscale<double>(bc.frame.from_axis == 0 ? keep_bb.max.x() : keep_bb.max.y()));
+        bc.region = keep.empty() ? ExPolygons{} : intersection_ex(bc.region, Polygons{ keep });
+    }
+
+    if (bc.region.empty())
+        return;
+    bc.region_bbox = get_extents(bc.region);
+
+    // 3. Line lattice.  Fixed pitch in the flattened metric, anchored at the
+    //    footprint's leading-most edge so lines stay collinear across
+    //    disconnected islands and across the apron prologue.
+    bc.pitch_u = std::max<coord_t>(1, coord_t(bc.brim_flow.scaled_spacing() * bc.frame.cos_tilt()));
+    bc.in_plane_pitch = unscale<double>(bc.pitch_u) * bc.frame.u_stretch();
+    {
+        const BoundingBox fbb = get_extents(footprint);
+        const bool low_side = bc.frame.shear > 0.;
+        bc.u_anchor = bc.frame.from_axis == 0 ? (low_side ? fbb.min.x() : fbb.max.x())
+                                              : (low_side ? fbb.min.y() : fbb.max.y());
+    }
+
+    // 4. Bands coincident with an object layer.
+    std::vector<ExtrusionEntityCollection> by_layer(nlayers);
+    std::vector<ExPolygons>                areas_by_layer(nlayers);
+    for (size_t i = 0; i < nlayers; ++ i) {
+        const Layer &layer = *object.layers()[i];
+        const Polygons obstacles = belt_brim_obstacles(print, object, bc.region_bbox, layer.print_z, 0.5 * layer.height);
+        belt_brim_band_paths(bc, layer.print_z, layer.height, obstacles, by_layer[i], areas_by_layer[i]);
+    }
+
+    // 5. Apron prologue: the part of the region downhill of the object's first
+    //    layer, which has no object layer to ride on.
+    std::vector<BeltBrimBand> prologue;
+    {
+        const Layer   &first  = *object.layers().front();
+        const coordf_t h      = first.height;
+        const bool     low_side = bc.frame.shear > 0.;
+        const coord_t  u_lead_s = bc.frame.from_axis == 0
+            ? (low_side ? bc.region_bbox.min.x() : bc.region_bbox.max.x())
+            : (low_side ? bc.region_bbox.min.y() : bc.region_bbox.max.y());
+        const coordf_t u_lead  = unscale<double>(u_lead_s);
+        // print_z at which the belt surface crosses the region's leading edge.
+        const coordf_t z_lead  = bc.ctx.shear_factor() * u_lead
+                               + bc.ctx.floor_offset() + bc.ctx.z_shift();
+        if (h > EPSILON)
+            for (coordf_t z = first.print_z - h; z > z_lead - h; z -= h) {
+                const Polygons obstacles = belt_brim_obstacles(print, object, bc.region_bbox, z, 0.5 * h);
+                BeltBrimBand band;
+                band.print_z = z;
+                band.height  = h;
+                belt_brim_band_paths(bc, z, h, obstacles, band.fills, band.areas);
+                if (! band.fills.empty())
+                    prologue.emplace_back(std::move(band));
+            }
+        // Lowest Z first, so collect_layers_to_print sees them in print order.
+        std::reverse(prologue.begin(), prologue.end());
+    }
+
+    object.set_belt_brim(std::move(by_layer), std::move(areas_by_layer), std::move(prologue));
+}
+
+} // namespace Slic3r

src/libslic3r/BeltBrim.hpp

@@ -0,0 +1,169 @@
+#ifndef slic3r_BeltBrim_hpp_
+#define slic3r_BeltBrim_hpp_
+
+#include "ExPolygon.hpp"
+#include "ExtrusionEntityCollection.hpp"
+#include "Point.hpp"
+#include "Polyline.hpp"
+
+#include <cmath>
+#include <vector>
+
+// Belt-printer brim geometry.
+//
+// A belt printer slices in a ROTATED frame, so the belt surface is not the
+// Z=0 bed plane but a tilted plane in slicing space:
+//
+//     z_slicing(u) = shear * u + floor_offset + z_shift,   u = X or Y
+//
+// where `shear == tan(tilt)` (SlicingParameters::belt_floor_shear_factor) and
+// the axis is selected by SlicingParameters::belt_floor_from_axis.  See
+// Support/BeltFloorContext.hpp for the canonical accessors.
+//
+// Consequences that drive everything in this file:
+//
+//   * A horizontal slicing layer touches the belt only along a narrow strip at
+//     its leading edge, `layer_height / shear` wide (~0.2 mm at 45 degrees).
+//     The object's belt footprint - its bottom face - is therefore spread over
+//     every layer, not contained in layer 0.
+//   * Distances measured in slicing XY are NOT on-belt distances: moving `du`
+//     along the shear axis travels `du / cos(tilt)` across the belt.  So brim
+//     offsets have to be taken in a "flattened" space where the shear axis is
+//     stretched by `1 / cos(tilt)`, then mapped back.
+//   * Brim ahead of the part (downhill) lies at slicing Z BELOW the object's
+//     first layer, because the object's layer 0 is precisely its leading
+//     contact with the belt.
+//
+// Everything here is pure geometry on ExPolygons/Polylines so it can be unit
+// tested without a Print.  Keep user-visible strings out of this file: it is
+// not listed in localization/i18n/list.txt.
+
+namespace Slic3r {
+
+// Tilt window within which the BELT plane, not the bed plane, is the adhesion
+// surface.  Below ~1 degree a belt is a flat bed as far as adhesion goes, and the
+// contact band would be layer_height/sin(tilt) - tens of millimetres - so the
+// ordinary plate brim is both correct and cheaper.  Above ~85 degrees the whole
+// brim compresses into a sliver and is not worth generating.
+inline constexpr double BELT_BRIM_MIN_TILT_DEG = 1.;
+inline constexpr double BELT_BRIM_MAX_TILT_DEG = 85.;
+
+// Description of the tilted belt plane, reduced to what the brim geometry needs.
+struct BeltBrimFrame
+{
+    // tan(tilt).  Sign selects which way is downhill.
+    double shear     = 0.;
+    // 0 = X, 1 = Y.  Matches BeltFloorContext::from_axis().
+    int    from_axis = 1;
+
+    // 1 / cos(tilt).  Stretch factor that turns a projected distance along
+    // `from_axis` into the true distance travelled across the belt.
+    double u_stretch() const { return std::sqrt(1. + shear * shear); }
+    // cos(tilt).  The inverse mapping.
+    double cos_tilt()  const { return 1. / this->u_stretch(); }
+    // Downhill is where the belt surface is lower, i.e. printed earlier, i.e.
+    // the leading edge of the part.  For shear > 0 that is -u.
+    int    downhill_sign() const { return shear > 0. ? -1 : +1; }
+};
+
+// Scale only the `from_axis` component by `factor`, rounding to nearest.
+//
+// Deliberately not MultiPoint::scale(fx, fy) / ExPolygon::scale(fx, fy): those
+// truncate toward zero, which is asymmetric about the origin and loses up to a
+// full coordinate unit per vertex on every round trip.
+ExPolygons belt_scale_u(const ExPolygons &src, const BeltBrimFrame &frame, double factor);
+Polylines  belt_scale_u(const Polylines  &src, const BeltBrimFrame &frame, double factor);
+
+// Into / out of the space where Euclidean offsets equal true on-belt distances.
+inline ExPolygons belt_flatten(const ExPolygons &src, const BeltBrimFrame &frame)
+    { return belt_scale_u(src, frame, frame.u_stretch()); }
+inline ExPolygons belt_unflatten(const ExPolygons &src, const BeltBrimFrame &frame)
+    { return belt_scale_u(src, frame, frame.cos_tilt()); }
+
+// Minkowski sum of `src` with the segment [0, t]: the region swept by sliding
+// `src` along t.  Used to grow the brim downhill for "extra brim width".
+//
+// Implemented as union_(P, P + t, {parallelogram per boundary edge}) over ALL
+// contours including holes, with every parallelogram forced counter-clockwise
+// so the non-zero fill rule closes holes narrower than t along the sweep
+// direction.  A hole survives exactly when it is wider than |t| measured along
+// t - not when it is wider in its narrowest Euclidean direction.
+ExPolygons sweep_ex(const ExPolygons &src, const Point &t);
+
+// Brim region for one already-flattened belt footprint.  All lengths are scaled
+// and measured in the flattened (true on-belt) metric.
+//
+// `has_outer` / `has_inner` are the resolved BrimType: belt printers collapse
+// Auto / Mouse ear / Painted to outer-only, so the caller does that mapping and
+// this function never needs PrintConfig.
+//
+// Two directional extras are applied to the footprint before the outer offset, so
+// each one buys reach in one direction only:
+//
+//   `leading` (leading_brim_length) sweeps the footprint DOWNHILL along the belt,
+//   so every leading-facing edge gains an apron ahead of it.
+//   `lateral`  (extra_brim_width)   sweeps it BOTH WAYS across the belt, widening
+//   the brim sideways without pushing it further ahead or behind.
+//
+// Neither is applied to the inner (hole) ring.
+ExPolygons belt_brim_region(const ExPolygons   &footprint_flat,
+                            bool                has_outer,
+                            bool                has_inner,
+                            coord_t             brim_width,
+                            coord_t             object_gap,
+                            coord_t             leading,
+                            coord_t             lateral,
+                            const BeltBrimFrame &frame);
+
+// Brim line positions for one layer band.
+//
+// Lines sit on a fixed lattice `u_anchor + k * pitch_u` so the on-belt spacing
+// between neighbouring brim lines is constant regardless of how the lattice
+// falls across layer bands.  Snapping to band centres instead would quantise
+// the spacing to whole bands and under-deposit by ~35% at 45 degrees.
+//
+// The band is half-open, [u_lo, u_hi), so every lattice point belongs to
+// exactly one band: none duplicated at a boundary, none dropped.  A band
+// narrower than the pitch simply yields nothing; a band much wider (shallow
+// tilt) yields several lines.
+std::vector<coord_t> belt_brim_line_positions(coord_t u_lo,
+                                              coord_t u_hi,
+                                              coord_t pitch_u,
+                                              coord_t u_anchor);
+
+// ---------------------------------------------------------------- pipeline
+
+// One brim-only layer printed BEFORE the object's first layer, carrying the
+// apron that has to be stuck to the belt ahead of the part.
+//
+// Deliberately not a Layer subclass.  A synthetic Layer would inherit id()
+// semantics that leak into initial-layer temperature selection, the spiral vase
+// probe, gradual interpolation, avoid-crossing-perimeters and cooling, all of
+// which key off Layer::id() == 0 or off a layer's regions.  A plain record
+// carries only what the emitter needs.
+//
+// `height` is the LAYER height, used for the Z move and ordering metadata only.
+// Each extrusion path inside `fills` carries its own height, equal to that
+// line's nozzle-to-belt clearance, which varies across the band.
+struct BeltBrimBand
+{
+    coordf_t                  print_z = 0.;
+    coordf_t                  height  = 0.;
+    // erBrim paths in the object's local slicing frame, untranslated.
+    ExtrusionEntityCollection fills;
+    // Footprint of those paths, for the first-layer convex hull / bbox.
+    ExPolygons                areas;
+};
+
+class PrintObject;
+
+// Generate the belt brim for one object: fills its per-object-layer bands and
+// its apron prologue.  No-op unless PrintObject::has_belt_brim().
+//
+// Runs inside posSupportMaterial rather than the brim step, because the prologue
+// print_z values must exist before ToolOrdering is built at psWipeTower.
+void make_belt_brim(PrintObject &object);
+
+} // namespace Slic3r
+
+#endif // slic3r_BeltBrim_hpp_

src/libslic3r/BeltGCode.cpp

@@ -0,0 +1,70 @@
+#include "BeltGCode.hpp"
+#include "BeltGCodeWriter.hpp"
+#include "BeltTransform.hpp"
+#include "Print.hpp"
+
+namespace Slic3r {
+
+void BeltGCode::init_belt_writer(Print &print)
+{
+    auto belt_writer = std::make_unique<BeltGCodeWriter>();
+    // Axis remap and build volume max are set by base GCode after init_belt_writer returns.
+    belt_writer->set_belt_back_transform(print.config());
+    belt_writer->set_machine_frame_transform(print.config());
+    belt_writer->set_xy_offset(m_gcode_offset.x(), m_gcode_offset.y());
+    m_writer = std::move(belt_writer);
+}
+
+void BeltGCode::write_belt_header(GCodeOutputStream &file, const Print &print)
+{
+    const auto &full_cfg = print.full_print_config();
+    // Slicing rotation: the belt tilt (axis + angle) and the single source of truth
+    // for the physical tilt the G-code viewer uses to enable belt view.
+    file.write_format("; belt_slice_rotation = %s\n", full_cfg.opt_serialize("belt_slice_rotation").c_str());
+    file.write_format("; belt_slice_rotation_angle = %.1f\n", print.config().belt_slice_rotation_angle.value);
+    file.write_format("; belt_slice_rotation_global = %d\n", print.config().belt_slice_rotation_global.value ? 1 : 0);
+    // Pre-slice remap configs
+    file.write_format("; preslice_remap_x = %s\n", full_cfg.opt_serialize("preslice_remap_x").c_str());
+    file.write_format("; preslice_remap_y = %s\n", full_cfg.opt_serialize("preslice_remap_y").c_str());
+    file.write_format("; preslice_remap_z = %s\n", full_cfg.opt_serialize("preslice_remap_z").c_str());
+    file.write_format("; preslice_remap_global = %d\n", print.config().preslice_remap_global.value ? 1 : 0);
+    file.write_format("; belt_preslice_global = %d\n", print.config().belt_preslice_global.value ? 1 : 0);
+    // Machine-frame transform: shear (tan) + scale (1/cos) derived from the belt
+    // tilt angle (or belt_frame_tilt_angle when decoupled).
+    file.write_format("; belt_frame_tilt_decouple = %d\n", print.config().belt_frame_tilt_decouple.value ? 1 : 0);
+    file.write_format("; belt_frame_tilt_angle = %.1f\n", print.config().belt_frame_tilt_angle.value);
+}
+
+void BeltGCode::on_set_origin(const PrintObject * /*obj*/, const Point & /*inst_shift*/)
+{
+    // Global pre-slice mode: adjust origin using computed correction.
+    // Transform the origin through the belt pipeline so that
+    // back_transform(T * origin) = origin (correct machine position).
+    //
+    // Flags that trigger this path:
+    //   belt_preslice_global         — full pipeline (rotation * remap) is global
+    //   preslice_remap_global        — only the pre-slice remap is global
+    //   belt_slice_rotation_global   — slicing rotation treated as global (matches
+    //                                  the per-instance Z-offset added in PrintObjectSlice.cpp)
+    // The XY origin adjustment uses the FULL forward transform, because the
+    // back_transform applied during G-code emission is always the inverse of
+    // the full pipeline.
+    bool use_global = m_config.belt_preslice_global.value
+        || (m_config.preslice_remap_global.value
+            && BeltTransformPipeline::has_preslice_remap(m_config))
+        || (m_config.belt_slice_rotation_global.value
+            && m_config.belt_slice_rotation.value != BeltRotationAxis::None
+            && std::abs(m_config.belt_slice_rotation_angle.value) > EPSILON);
+    if (!use_global)
+        return;
+
+    // Adjust origin: transform through belt forward pipeline so that
+    // the back-transform correctly recovers model-space positions.
+    Transform3d T = BeltTransformPipeline::build_forward_transform(m_config);
+    Vec2d cur_origin = this->origin();
+    Vec3d origin3d(cur_origin.x(), cur_origin.y(), 0.);
+    Vec3d adjusted = T.linear() * origin3d;
+    this->set_origin(Vec2d(adjusted.x(), adjusted.y()));
+}
+
+} // namespace Slic3r

src/libslic3r/BeltGCode.hpp

@@ -0,0 +1,23 @@
+#pragma once
+
+#include "GCode.hpp"
+
+namespace Slic3r {
+
+// Belt-printer-specific GCode export.
+//
+// Inherits from GCode and overrides virtual hooks to:
+// - Create a BeltGCodeWriter instead of a plain GCodeWriter
+// - Write belt configuration to the G-code header
+// - Adjust the origin for global pre-slice transforms when switching instances
+// - Disable arc fitting (G2/G3 not supported on belt printers)
+class BeltGCode : public GCode
+{
+protected:
+    void init_belt_writer(Print &print) override;
+    void write_belt_header(GCodeOutputStream &file, const Print &print) override;
+    void on_set_origin(const PrintObject *obj, const Point &inst_shift) override;
+    bool should_disable_arc_fitting() const override { return true; }
+};
+
+} // namespace Slic3r

src/libslic3r/BeltGCodeWriter.cpp

@@ -0,0 +1,278 @@
+#include "BeltGCodeWriter.hpp"
+#include "FirstLayerPlane.hpp"
+#include "Geometry.hpp"
+#include <boost/log/trivial.hpp>
+
+namespace Slic3r {
+
+namespace {
+
+// Decide whether a particular destination point gets first-layer treatment.
+// When the plane evaluator is active, distance from the plane wins; otherwise
+// fall back to the layer-coarse m_is_first_layer flag set by the caller.
+inline bool belt_point_on_first_layer(
+    const FirstLayerPlane *plane,
+    double                 first_layer_thickness_mm,
+    bool                   layer_first_flag,
+    const Vec3d           &point_slicing_mm)
+{
+    if (plane && plane->is_active())
+        return plane->is_first_layer(point_slicing_mm, first_layer_thickness_mm);
+    return layer_first_flag;
+}
+
+} // namespace
+
+// ---- Belt configuration ---------------------------------------------------
+
+void BeltGCodeWriter::set_belt_back_transform(const PrintConfig &config)
+{
+    m_belt_back_transform.init_from_config(config);
+}
+
+void BeltGCodeWriter::set_machine_frame_transform(const PrintConfig &config)
+{
+    m_machine_frame_transform.init_from_config(config);
+}
+
+Vec3d BeltGCodeWriter::to_machine_coords(const Vec3d &pos) const
+{
+    // Step 1+2: To Cartesian (back_transform + axis_remap).
+    // In world-coordinates mode (PA line / PA pattern calibration) the input
+    // already describes a point relative to the belt surface, so the
+    // slicer->world back-transform is skipped and only the machine kinematics
+    // (axis remap + frame shear/scale) are applied.
+    Vec3d after_back = m_world_coordinates ? pos : m_belt_back_transform.apply(pos);
+    Vec3d result     = apply_axis_remap(after_back);
+    Vec3d after_remap = result;
+    // Step 3: Machine-frame transform (belt frame tilt) applied LAST so it acts
+    // as a global linear transform on the placed coords.
+    Vec3d final = m_machine_frame_transform.apply(result);
+
+    // [BELT-DEBUG] One-shot log per layer transition (i.e. when the input Z
+    // crosses an integer mm boundary) to keep the log volume manageable while
+    // still capturing one sample per ~5 layers.  Shows the full pipeline so
+    // Case A vs Case B can be compared step-by-step.
+    static thread_local int s_last_logged_z = std::numeric_limits<int>::min();
+    int z_bucket = static_cast<int>(std::floor(pos.z() * 5.0));  // every 0.2mm
+    if (z_bucket != s_last_logged_z) {
+        s_last_logged_z = z_bucket;
+        BOOST_LOG_TRIVIAL(trace) << "[BELT-DEBUG] to_machine_coords"
+            << " slicer_in=(" << pos.x() << "," << pos.y() << "," << pos.z() << ")"
+            << " after_back=(" << after_back.x() << "," << after_back.y() << "," << after_back.z() << ")"
+            << " after_remap=(" << after_remap.x() << "," << after_remap.y() << "," << after_remap.z() << ")"
+            << " final=(" << final.x() << "," << final.y() << "," << final.z() << ")"
+            << " mft_active=" << m_machine_frame_transform.is_active()
+            << " back_active=" << m_belt_back_transform.is_active();
+    }
+    return final;
+}
+
+// ---- Overridden movement methods ------------------------------------------
+
+std::string BeltGCodeWriter::travel_to_xy(const Vec2d &point, const std::string &comment)
+{
+    m_pos(0) = point(0);
+    m_pos(1) = point(1);
+
+    this->set_current_position_clear(true);
+    Vec2d point_on_plate = { point(0) - m_x_offset, point(1) - m_y_offset };
+
+    // Belt printer: transform to machine coordinates (XY travel also needs Z due to YZ rotation)
+    Vec3d machine = to_machine_coords(Vec3d(point_on_plate.x(), point_on_plate.y(), m_pos.z()));
+
+    GCodeG1Formatter w;
+    w.emit_xyz(machine);
+    const bool first_layer_for_point = belt_point_on_first_layer(
+        m_first_layer_plane, m_first_layer_thickness_mm, m_is_first_layer,
+        Vec3d(point_on_plate.x(), point_on_plate.y(), m_pos.z()));
+    auto speed = first_layer_for_point
+        ? this->config.get_abs_value_at("initial_layer_travel_speed", m_cached_extruder_idx)
+        : this->config.travel_speed.get_at(m_cached_extruder_idx);
+    w.emit_f(speed * 60.0);
+    w.emit_comment(GCodeWriter::full_gcode_comment, comment);
+    return w.string();
+}
+
+std::string BeltGCodeWriter::lazy_lift(LiftType lift_type, bool spiral_vase)
+{
+    // Belt printer: force NormalLift since SpiralLift and SlopeLift compute
+    // slope angles that don't account for the YZ coordinate rotation.
+    return GCodeWriter::lazy_lift(LiftType::NormalLift, spiral_vase);
+}
+
+std::string BeltGCodeWriter::eager_lift(const LiftType type)
+{
+    // Belt printer: force NormalLift (SpiralLift/SlopeLift don't account for YZ rotation).
+    return GCodeWriter::eager_lift(LiftType::NormalLift);
+}
+
+std::string BeltGCodeWriter::_travel_to_z(double z, const std::string &comment)
+{
+    m_pos(2) = z;
+
+    double speed = this->config.travel_speed_z.get_at(m_cached_extruder_idx);
+    if (speed == 0.) {
+        const bool first_layer_for_point = belt_point_on_first_layer(
+            m_first_layer_plane, m_first_layer_thickness_mm, m_is_first_layer,
+            Vec3d(m_pos.x() - m_x_offset, m_pos.y() - m_y_offset, z));
+        speed = first_layer_for_point ? this->config.get_abs_value_at("initial_layer_travel_speed", m_cached_extruder_idx)
+                                      : this->config.travel_speed.get_at(m_cached_extruder_idx);
+    }
+
+    // Belt printer: a Z-only move in slicing frame needs to emit both Y and Z in machine coords.
+    Vec3d machine = to_machine_coords(Vec3d(m_pos.x() - m_x_offset, m_pos.y() - m_y_offset, z));
+
+    GCodeG1Formatter w;
+    w.emit_xyz(machine);
+    w.emit_f(speed * 60.0);
+    w.emit_comment(GCodeWriter::full_gcode_comment, comment);
+    return w.string();
+}
+
+std::string BeltGCodeWriter::extrude_to_xy(const Vec2d &point, double dE, const std::string &comment, bool force_no_extrusion)
+{
+    m_pos(0) = point(0);
+    m_pos(1) = point(1);
+    if (std::abs(dE) <= std::numeric_limits<double>::epsilon())
+        force_no_extrusion = true;
+
+    if (!force_no_extrusion)
+        filament()->extrude(dE);
+
+    Vec2d point_on_plate = { point(0) - m_x_offset, point(1) - m_y_offset };
+
+    // Belt printer: transform and emit XYZ (Y and Z are coupled)
+    Vec3d machine = to_machine_coords(Vec3d(point_on_plate.x(), point_on_plate.y(), m_pos.z()));
+
+    GCodeG1Formatter w;
+    w.emit_xyz(machine);
+    if (!force_no_extrusion)
+        w.emit_e(filament()->E());
+    w.emit_comment(GCodeWriter::full_gcode_comment, comment);
+    return w.string();
+}
+
+std::string BeltGCodeWriter::extrude_to_xyz(const Vec3d &point, double dE, const std::string &comment, bool force_no_extrusion)
+{
+    m_pos = point;
+    m_lifted = 0;
+    if (!force_no_extrusion)
+        filament()->extrude(dE);
+
+    Vec3d point_on_plate = { point(0) - m_x_offset, point(1) - m_y_offset, point(2) };
+    point_on_plate = to_machine_coords(point_on_plate);
+
+    GCodeG1Formatter w;
+    w.emit_xyz(point_on_plate);
+    if (!force_no_extrusion)
+        w.emit_e(filament()->E());
+    w.emit_comment(GCodeWriter::full_gcode_comment, comment);
+    return w.string();
+}
+
+std::string BeltGCodeWriter::travel_to_xyz(const Vec3d &point, const std::string &comment, bool force_z)
+{
+    // Belt-specific override of travel_to_xyz.
+    // Key differences from base:
+    // 1. All coordinates go through to_machine_coords()
+    // 2. Always emit full XYZ (can't split XY and Z due to coupling)
+    // 3. Lift type forced to NormalLift (handled by lazy_lift/eager_lift overrides)
+
+    Vec3d dest_point = point;
+    const bool first_layer_for_point = belt_point_on_first_layer(
+        m_first_layer_plane, m_first_layer_thickness_mm, m_is_first_layer,
+        Vec3d(point.x() - m_x_offset, point.y() - m_y_offset, point.z()));
+    auto travel_speed =
+        first_layer_for_point ? this->config.get_abs_value_at("initial_layer_travel_speed", m_cached_extruder_idx)
+                              : this->config.travel_speed.get_at(m_cached_extruder_idx);
+
+    // Handle pending z_hop
+    if (std::abs(m_to_lift) > EPSILON) {
+        assert(std::abs(m_lifted) < EPSILON);
+        if ((!this->is_current_position_clear() || m_pos != dest_point) &&
+            m_to_lift + m_pos(2) > point(2)) {
+            m_lifted = m_to_lift + m_pos(2) - point(2);
+            dest_point(2) = m_to_lift + m_pos(2);
+        }
+        m_to_lift = 0.;
+
+        std::string slop_move;
+        Vec3d source = { m_pos(0) - m_x_offset, m_pos(1) - m_y_offset, m_pos(2) };
+        Vec3d target = { dest_point(0) - m_x_offset, dest_point(1) - m_y_offset, dest_point(2) };
+        Vec3d delta = target - source;
+        Vec2d delta_no_z = { delta(0), delta(1) };
+
+        if (delta(2) > 0 && delta_no_z.norm() != 0.0f) {
+            // Belt: SpiralLift and SlopeLift are disabled (lazy_lift forces NormalLift),
+            // but handle NormalLift and fallthrough.
+            if (m_to_lift_type == LiftType::SlopeLift &&
+                this->is_current_position_clear() &&
+                atan2(delta(2), delta_no_z.norm()) < this->filament()->travel_slope()) {
+                Vec2d temp = delta_no_z.normalized() * delta(2) / tan(this->filament()->travel_slope());
+                Vec3d slope_top_point = Vec3d(temp(0), temp(1), delta(2)) + source;
+                slope_top_point = to_machine_coords(slope_top_point);
+                GCodeG1Formatter w0;
+                w0.emit_xyz(slope_top_point);
+                w0.emit_f(travel_speed * 60.0);
+                w0.emit_comment(GCodeWriter::full_gcode_comment, comment);
+                slop_move = w0.string();
+            }
+            else if (m_to_lift_type == LiftType::NormalLift && this->is_current_position_clear()) {
+                // Only lift-in-place when the current position is known. On a normal
+                // printer _travel_to_z emits a Z-only move, but in belt mode Z is coupled
+                // to Y/X, so _travel_to_z re-emits the current m_pos through the belt
+                // shear. At print start (and after custom gcode) m_pos.xy is still the
+                // uninitialised origin (0,0), which shears into a bogus machine point
+                // (e.g. X=bed_max, Y=layer_z) far up the gantry. Skipping the separate
+                // lift here is safe: there is nothing to lift over yet, and the
+                // xy_z_move below travels straight to the destination with full XYZ,
+                // establishing the correct position. This mirrors the SlopeLift branch
+                // above, which already guards on is_current_position_clear().
+                slop_move = _travel_to_z(target.z(), "normal lift Z");
+            }
+        }
+
+        std::string xy_z_move;
+        {
+            Vec3d emit_target = to_machine_coords(target);
+            GCodeG1Formatter w0;
+            // Belt mode: always emit full XYZ since Y and Z are coupled
+            w0.emit_xyz(emit_target);
+            w0.emit_f(travel_speed * 60.0);
+            w0.emit_comment(GCodeWriter::full_gcode_comment, comment);
+            xy_z_move = w0.string();
+        }
+        m_pos = dest_point;
+        this->set_current_position_clear(true);
+        return slop_move + xy_z_move;
+    }
+    else if (!force_z && !this->will_move_z(point(2))) {
+        double nominal_z = m_pos(2) - m_lifted;
+        m_lifted -= (point(2) - nominal_z);
+        if (std::abs(m_lifted) < EPSILON)
+            m_lifted = 0.;
+        this->set_current_position_clear(true);
+        return this->travel_to_xy(to_2d(point));
+    }
+    else {
+        m_lifted = 0;
+    }
+
+    Vec3d point_on_plate = { dest_point(0) - m_x_offset, dest_point(1) - m_y_offset, dest_point(2) };
+    point_on_plate = to_machine_coords(point_on_plate);
+
+    // Belt mode: always emit full XYZ
+    GCodeG1Formatter w;
+    w.emit_xyz(point_on_plate);
+    // Use the first-layer-aware travel_speed computed at the top of this function,
+    // not the raw config travel_speed, so initial-layer travels are correctly slowed.
+    w.emit_f(travel_speed * 60.0);
+    w.emit_comment(GCodeWriter::full_gcode_comment, comment);
+
+    m_pos = dest_point;
+    this->set_current_position_clear(true);
+    return w.string();
+}
+
+} // namespace Slic3r

src/libslic3r/BeltGCodeWriter.hpp

@@ -0,0 +1,64 @@
+#pragma once
+
+#include "GCodeWriter.hpp"
+#include "GCode/BeltBackTransform.hpp"
+#include "GCode/MachineFrameTransform.hpp"
+
+namespace Slic3r {
+
+class FirstLayerPlane;
+
+// Belt-printer-specific GCode writer.
+//
+// Inherits from GCodeWriter and overrides movement methods to apply
+// coordinate transformation (back-transform, axis remap, machine-frame
+// transform) and emit coupled XYZ moves (Y and Z are coupled due to belt tilt).
+class BeltGCodeWriter : public GCodeWriter
+{
+public:
+    BeltGCodeWriter() : GCodeWriter() {}
+
+    // Belt configuration (axis remap is inherited from GCodeWriter)
+    void set_belt_back_transform(const PrintConfig &config);
+    void set_machine_frame_transform(const PrintConfig &config);
+    Vec3d to_machine_coords(const Vec3d &pos) const;
+
+    // World-coordinates mode: incoming coordinates are treated as points
+    // relative to the physical belt surface (X across, Y along the belt,
+    // Z height above it) instead of slicing-frame coordinates — the
+    // slicer->world back-transform is skipped. Used by the PA line / PA
+    // pattern calibration generators, whose logical bed coordinates describe
+    // first-layer drawings on the build surface.
+    void set_world_coordinates(bool enable) { m_world_coordinates = enable; }
+
+    // First-layer plane: when set to a non-null active evaluator, travel
+    // speed selection consults the plane per-move and uses
+    // initial_layer_travel_speed for points within first_layer_height_mm
+    // of the plane (regardless of slicing layer index).
+    void set_first_layer_plane(const FirstLayerPlane *plane,
+                               double first_layer_height_mm) {
+        m_first_layer_plane         = plane;
+        m_first_layer_thickness_mm  = first_layer_height_mm;
+    }
+
+    // Overridden movement methods
+    std::string travel_to_xy(const Vec2d &point, const std::string &comment = std::string()) override;
+    std::string travel_to_xyz(const Vec3d &point, const std::string &comment = std::string(), bool force_z = false) override;
+    std::string extrude_to_xy(const Vec2d &point, double dE, const std::string &comment = std::string(), bool force_no_extrusion = false) override;
+    std::string extrude_to_xyz(const Vec3d &point, double dE, const std::string &comment = std::string(), bool force_no_extrusion = false) override;
+    std::string lazy_lift(LiftType lift_type = LiftType::NormalLift, bool spiral_vase = false) override;
+    std::string eager_lift(const LiftType type) override;
+
+protected:
+    std::string _travel_to_z(double z, const std::string &comment) override;
+
+private:
+    BeltBackTransform     m_belt_back_transform;
+    MachineFrameTransform m_machine_frame_transform;
+    bool                  m_world_coordinates = false;
+    // Borrowed pointer; lifetime owned by GCode.  null = inactive.
+    const FirstLayerPlane *m_first_layer_plane = nullptr;
+    double          m_first_layer_thickness_mm = 0.;
+};
+
+} // namespace Slic3r

src/libslic3r/BeltPurge.cpp

@@ -0,0 +1,346 @@
+// ORCA-Belt: backend of the belt purge tower (the belt replacement for the
+// classic wipe/prime tower).
+//
+// Kept in its own translation unit so the belt-purge logic stays out of the way
+// of unrelated upstream changes to Print.cpp / PrintObjectSlice.cpp and carries
+// no regression risk for normal printers: none of these methods do anything
+// unless the print is a belt printer with the belt purge tower enabled.
+//
+//   Print::has_belt_purge_tower()      - is the belt purge tower active?
+//   Print::_align_belt_purge_layers()  - snap the prism's layer grid onto the
+//                                        printed objects' grid
+//   Print::_plan_belt_purge()          - route filament-change purging into the
+//                                        prism (flush-into-objects), no wipe tower
+//   PrintObject::belt_shift_layer_grid()      - shift a sliced layer grid
+//   PrintObject::belt_truncate_layers_above() - cancel the prism past the last swap
+//
+// (Declarations live in Print.hpp alongside the rest of the Print interface.)
+
+#include "Print.hpp"
+#include "PrintConfig.hpp"
+#include "Exception.hpp"
+#include "GCode/ToolOrdering.hpp"
+#include "Layer.hpp"
+#include "ExtrusionEntity.hpp"
+#include "ExtrusionEntityCollection.hpp"
+#include "I18N.hpp"
+#include "format.hpp"
+#include "LocalesUtils.hpp"
+#include "libslic3r.h"
+
+#include <algorithm>
+#include <cmath>
+#include <limits>
+
+#include <boost/log/trivial.hpp>
+
+namespace Slic3r {
+
+// Belt purge prism: purging after filament changes is routed into a sliced
+// prism object via the flush-into-objects machinery instead of a wipe tower.
+bool Print::has_belt_purge_tower() const
+{
+    // Its own purge-tower "type", gated by the belt-only enable_belt_purge_tower
+    // option (not the classic enable_prime_tower).
+    if (!(m_config.belt_printer.value
+          && m_config.enable_belt_purge_tower.value
+          && !m_config.spiral_mode.value
+          && m_config.filament_diameter.values.size() > 1))
+        return false;
+
+    return std::any_of(m_objects.begin(), m_objects.end(), [](const PrintObject *object) {
+        return object->config().belt_purge_tower_object.value;
+    });
+}
+
+// Belt mode: align ALL objects on the plate (the printed objects AND the purge
+// prism) onto one common layer grid, so the prism can absorb every toolchange.
+//
+// After belt slicing each object's layer print_z carries a per-object global z
+// offset (mesh-vertex-scan belt_z_shift + instance-Y-dependent terms), so
+// objects at different belt-Y positions get layer grids with DIFFERENT residues
+// (mod layer height). Purge marking looks absorbers up with
+// get_layer_at_printz(lt.print_z, EPSILON), so a toolchange on object B only
+// absorbs into the prism if the prism has a layer at B's print_z. Snapping only
+// the prism to one object therefore worked for a single (assembled) multi-color
+// object but failed with multiple separate objects — the prism could follow only
+// one grid, and toolchanges on the others went unabsorbed ("multiple layer
+// grids" warning).
+//
+// Fix: pick one reference grid (the tallest object) and shift every object onto
+// it. Each shift is at most half a layer height — a sub-100µm move along the
+// belt, the very same mechanism the per-object global_z_offset already uses, and
+// it keeps each object internally consistent (belt_shift_layer_grid moves the
+// object's layers, its support layers, and its belt floor together). Equal layer
+// height across objects is enforced by Print::validate(), so once residues match
+// every object steps on the same lattice {ref_offset + k*h} and every toolchange
+// layer coincides with a prism layer.
+void Print::_align_belt_purge_layers()
+{
+    PrintObject *prism = nullptr;
+    for (PrintObject *po : m_objects)
+        if (po->config().belt_purge_tower_object.value && !po->layers().empty()) {
+            prism = po;
+            break;
+        }
+    if (prism == nullptr || prism->layers().empty())
+        return;
+
+    const double h = prism->config().layer_height.value;
+    if (h <= EPSILON)
+        return;
+
+    // Grid residue of an object's layer grid: identical for all of an object's
+    // layers above the first since they step by h.
+    auto grid_offset = [h](const PrintObject *po) -> double {
+        if (po->layers().empty())
+            return 0.;
+        const double z = po->layers().front()->print_z;
+        return z - std::floor(z / h) * h; // in [0, h)
+    };
+
+    // Reference grid: the tallest non-prism object (proxy for the object with
+    // the most toolchange layers — minimizes how far the rest must move).
+    const PrintObject *ref     = nullptr;
+    double             ref_top = -std::numeric_limits<double>::max();
+    for (const PrintObject *po : m_objects) {
+        if (po->config().belt_purge_tower_object.value || po->layers().empty())
+            continue;
+        const double top = po->layers().back()->print_z;
+        if (top > ref_top) {
+            ref_top = top;
+            ref     = po;
+        }
+    }
+    if (ref == nullptr)
+        return;
+
+    const double ref_offset = grid_offset(ref);
+
+    // Snap every object (printed objects AND the prism) onto the reference grid.
+    for (PrintObject *po : m_objects) {
+        if (po->layers().empty())
+            continue;
+        double delta = ref_offset - grid_offset(po);
+        if (delta > 0.5 * h)
+            delta -= h;
+        else if (delta <= -0.5 * h)
+            delta += h;
+        po->belt_shift_layer_grid(delta); // no-op for the reference object (delta ~ 0)
+    }
+
+    BOOST_LOG_TRIVIAL(debug) << "[BELT-DEBUG] purge grid align: snapped " << m_objects.size()
+        << " objects onto ref grid offset=" << ref_offset
+        << " (ref=" << ref->model_object()->name << ")";
+}
+
+// Belt mode replacement for _make_wipe_tower(): plan filament-change purging
+// into the belt purge prism (and any other flush_into_* object) using the
+// flush-into-objects machinery, without generating classic wipe tower G-code.
+// The toolchange itself is emitted by GCode::set_extruder() via the
+// change_filament_gcode macro; the overrides marked here make the new
+// filament's first extrusions land in the purge prism.
+void Print::_plan_belt_purge()
+{
+    m_wipe_tower_data.clear();
+
+    // psWipeTower may be invalidated without posSlice (for example after a
+    // filament-map or tool-ordering change). Restore a prism shortened by the
+    // previous plan so a newly higher toolchange can use its original layers.
+    for (PrintObject *po : m_objects)
+        if (po->config().belt_purge_tower_object.value)
+            po->belt_restore_truncated_layers();
+
+    // Must run before ToolOrdering is built: LayerTools merge per-object layer
+    // print_z values, and the prism only absorbs purge where its (snapped)
+    // layers coincide with the toolchange layers.
+    this->_align_belt_purge_layers();
+
+    const unsigned int number_of_extruders = (unsigned int) m_config.filament_colour.values.size();
+
+    // No initial priming extrusions: there is no tower to prime on.
+    m_wipe_tower_data.tool_ordering = ToolOrdering(*this, (unsigned int) -1, false);
+    m_wipe_tower_data.tool_ordering.sort_and_build_data(*this, (unsigned int) -1, false);
+
+    if (m_wipe_tower_data.tool_ordering.empty() || m_wipe_tower_data.tool_ordering.last_extruder() == unsigned(-1))
+        throw Slic3r::SlicingError("The print is empty. The model is not printable with current print settings.");
+
+    if (!m_wipe_tower_data.tool_ordering.has_wipe_tower())
+        // No toolchanges anywhere, nothing to purge.
+        return;
+
+    this->throw_if_canceled();
+
+    // Flush volumes per filament pair, mirroring the generic wipe tower path:
+    // full flush matrix for single extruder multi material with purging enabled,
+    // plain prime volume otherwise.
+    std::vector<float> flush_matrix(cast<float>(
+        get_flush_volumes_matrix(m_config.flush_volumes_matrix.values, 0, m_config.nozzle_diameter.values.size())));
+    std::vector<std::vector<float>> wipe_volumes;
+    for (unsigned int i = 0; i < number_of_extruders; ++i)
+        wipe_volumes.push_back(std::vector<float>(flush_matrix.begin() + i * number_of_extruders,
+                                                  flush_matrix.begin() + (i + 1) * number_of_extruders));
+    const bool  use_flush_matrix = m_config.purge_in_prime_tower && m_config.single_extruder_multi_material;
+    const float flush_multiplier = (float) m_config.flush_multiplier.get_at(0);
+
+    // Cancel the purge prism early: pre-scan the tool ordering for the highest
+    // print_z that actually has a toolchange, then drop the prism's layers above
+    // it so the tower stops at the last color swap (saves filament/time). This
+    // MUST happen before the marking loop below: ensure_perimeters_infills_order
+    // force-overrides the prism's extrusions on every layer (it is a dedicated
+    // flush object), so truncating afterwards would leave dangling overrides
+    // pointing into deleted layers.
+    {
+        double       last_tc_z   = -1.;
+        unsigned int cur_ext     = m_wipe_tower_data.tool_ordering.first_extruder();
+        for (const auto &lt : m_wipe_tower_data.tool_ordering.layer_tools())
+            for (const unsigned int e : lt.extruders)
+                if (e != cur_ext) { last_tc_z = lt.print_z; cur_ext = e; }
+        if (last_tc_z >= 0.)
+            for (PrintObject *po : m_objects)
+                if (po->config().belt_purge_tower_object.value && !po->layers().empty()) {
+                    po->belt_truncate_layers_above(last_tc_z);
+                    break;
+                }
+    }
+
+    // Diagnostic: the prism only absorbs purge at toolchange layers whose
+    // print_z coincides with one of its own layers. Compare the prism's layer
+    // print_z range to the toolchange print_z range and count how many
+    // toolchange layers actually land on a prism layer. This distinguishes a
+    // range/grid-alignment failure (no coverage) from a capacity shortfall
+    // (covered but not enough cross-section).
+    PrintObject *prism_po = nullptr;
+    for (PrintObject *po : m_objects)
+        if (po->config().belt_purge_tower_object.value && !po->layers().empty()) { prism_po = po; break; }
+    const PrintObject *diag_prism = prism_po;
+    if (diag_prism != nullptr)
+        BOOST_LOG_TRIVIAL(warning) << "[BELT-DEBUG] purge prism layer range print_z=["
+            << diag_prism->layers().front()->print_z << ", " << diag_prism->layers().back()->print_z
+            << "] nlayers=" << diag_prism->layers().size();
+    int tc_layers = 0, tc_layers_covered = 0;
+
+    float  total_leftover      = 0.f;
+    float  worst_layer_leftover = 0.f;
+    double worst_layer_z       = 0.;
+
+    unsigned int current_extruder_id = m_wipe_tower_data.tool_ordering.first_extruder();
+    for (auto &layer_tools : m_wipe_tower_data.tool_ordering.layer_tools()) {
+        float layer_leftover = 0.f;
+        bool  layer_has_tc   = false;
+        for (const unsigned int extruder_id : layer_tools.extruders) {
+            if (extruder_id == current_extruder_id)
+                continue;
+            if (!layer_has_tc) {
+                layer_has_tc = true;
+                ++tc_layers;
+                if (diag_prism != nullptr && diag_prism->get_layer_at_printz(layer_tools.print_z, EPSILON) != nullptr)
+                    ++tc_layers_covered;
+            }
+            float volume_to_wipe = use_flush_matrix ?
+                wipe_volumes[current_extruder_id][extruder_id] * flush_multiplier :
+                (float) m_config.prime_volume;
+            float leftover = layer_tools.wiping_extrusions().mark_wiping_extrusions(*this, current_extruder_id, extruder_id,
+                                                                                    volume_to_wipe);
+            BOOST_LOG_TRIVIAL(trace) << "[BELT-DEBUG] purge toolchange print_z=" << layer_tools.print_z
+                << " filament " << current_extruder_id << "->" << extruder_id
+                << " requested=" << volume_to_wipe
+                << " absorbed=" << volume_to_wipe - leftover
+                << " leftover=" << leftover;
+            layer_leftover += leftover;
+            current_extruder_id = extruder_id;
+        }
+
+        // Do not destructively remove unclaimed fill entities here. psWipeTower
+        // can rerun without regenerating infill, and a later tool ordering may
+        // need entities that were unclaimed by the previous plan.
+        layer_tools.wiping_extrusions().ensure_perimeters_infills_order(*this);
+        if (layer_leftover > 0.f) {
+            total_leftover += layer_leftover;
+            if (layer_leftover > worst_layer_leftover) {
+                worst_layer_leftover = layer_leftover;
+                worst_layer_z        = layer_tools.print_z;
+            }
+        }
+        this->throw_if_canceled();
+    }
+
+    BOOST_LOG_TRIVIAL(warning) << "[BELT-DEBUG] purge coverage: " << tc_layers_covered << "/" << tc_layers
+        << " toolchange layers land on a prism layer"
+        << (tc_layers > 0 && tc_layers_covered == 0 ? " (RANGE/GRID MISALIGNMENT — prism absorbs nothing)" :
+            tc_layers_covered < tc_layers ? " (partial coverage)" : " (full coverage)");
+
+    if (total_leftover > 1.f) {
+        this->active_step_add_warning(
+            PrintStateBase::WarningLevel::CRITICAL,
+            Slic3r::format(_u8L("The belt purge tower cannot absorb the full purge volume: %1% mm³ in total could not "
+                                "be purged (worst layer: %2% mm³ at height %3%). The print may show color bleeding. "
+                                "Increase the belt purge tower width, or reduce flushing volumes."),
+                           int(std::ceil(total_leftover)), int(std::ceil(worst_layer_leftover)),
+                           Slic3r::float_to_string_decimal_point(worst_layer_z, 2)));
+        BOOST_LOG_TRIVIAL(warning) << "[BELT-DEBUG] purge planning leftover total=" << total_leftover
+            << " worst_layer=" << worst_layer_leftover << " at print_z=" << worst_layer_z;
+    }
+}
+
+// Belt mode: shift the sliced layer grid by delta. Mirrors the global_z_offset
+// application in slice() — layer print_z and belt_floor_z_shift move together
+// so belt floor clipping stays consistent with the shifted grid. Used by
+// Print::_align_belt_purge_layers() to snap the purge prism onto the printed
+// objects' layer grid; |delta| <= half a layer height, i.e. a sub-layer shift
+// of the prism along the belt.
+void PrintObject::belt_shift_layer_grid(double delta)
+{
+    if (std::abs(delta) < EPSILON)
+        return;
+    for (Layer *layer : m_layers)
+        layer->print_z += delta;
+    for (SupportLayer *layer : m_support_layers)
+        layer->print_z += delta;
+    m_slicing_params.belt_floor_z_shift += delta;
+    BOOST_LOG_TRIVIAL(trace) << "[BELT-DEBUG] belt_shift_layer_grid"
+        << " obj=" << this->model_object()->name
+        << " delta=" << delta
+        << " first_layer.print_z=" << (m_layers.empty() ? 0. : m_layers.front()->print_z);
+}
+
+// Belt mode: drop layers strictly above z (used to cancel the purge prism early
+// once there are no more toolchanges above z, so the tower stops at the last
+// color swap instead of wasting filament up the rest of the belt). Each layer's
+// cross-section is already sliced, so removing upper layers does not affect the
+// last toolchange's coverage. Deletes the Layer objects and clears the new top
+// layer's upper-layer link. Returns the number of layers removed.
+size_t PrintObject::belt_truncate_layers_above(coordf_t z)
+{
+    // A repeated plan always starts from the restored full layer set.
+    assert(m_belt_truncated_layers.empty());
+    size_t keep = m_layers.size();
+    while (keep > 0 && m_layers[keep - 1]->print_z > z + EPSILON)
+        --keep;
+    if (keep >= m_layers.size())
+        return 0;
+    const size_t removed = m_layers.size() - keep;
+    m_belt_truncated_layers.assign(m_layers.begin() + keep, m_layers.end());
+    m_layers.resize(keep);
+    if (!m_layers.empty())
+        m_layers.back()->upper_layer = nullptr;
+    BOOST_LOG_TRIVIAL(debug) << "[BELT-DEBUG] truncate purge prism above print_z=" << z
+        << " kept=" << keep << " removed=" << removed
+        << " new_top=" << (m_layers.empty() ? 0. : m_layers.back()->print_z);
+    return removed;
+}
+
+void PrintObject::belt_restore_truncated_layers()
+{
+    if (m_belt_truncated_layers.empty())
+        return;
+
+    m_layers.insert(m_layers.end(), m_belt_truncated_layers.begin(), m_belt_truncated_layers.end());
+    m_belt_truncated_layers.clear();
+    for (size_t i = 0; i < m_layers.size(); ++i) {
+        m_layers[i]->lower_layer = i == 0 ? nullptr : m_layers[i - 1];
+        m_layers[i]->upper_layer = i + 1 < m_layers.size() ? m_layers[i + 1] : nullptr;
+    }
+}
+
+} // namespace Slic3r

src/libslic3r/BeltSliceStrategy.cpp

@@ -0,0 +1,143 @@
+#include "BeltSliceStrategy.hpp"
+#include "Model.hpp"
+
+#include <limits>
+
+#include <boost/log/trivial.hpp>
+#ifdef SLIC3R_BELT_DIAGNOSTIC_LOG
+#include <iomanip>
+#include <sstream>
+#include <thread>
+#endif
+
+namespace Slic3r {
+
+void BeltSliceStrategy::apply_preslice_transforms(Transform3d           &trafo,
+                                                  const PrintConfig     &config,
+                                                  const ModelVolumePtrs &model_volumes,
+                                                  double                *out_belt_min_z)
+{
+    // 1. Standalone pre-slice axis remap (works without belt mode).
+    const bool has_remap = BeltTransformPipeline::has_preslice_remap(config);
+    if (has_remap)
+        trafo = BeltTransformPipeline::build_preslice_remap(config) * trafo;
+
+    // 2. Belt rotation — the sole mesh-side belt transform (matching
+    //    BeltTransformPipeline::build_forward_transform).  Only active in
+    //    belt-printer mode.
+    bool has_rotation = false;
+    if (config.belt_printer.value) {
+        const Matrix3d rot = BeltTransformPipeline::build_rotation_matrix(config, &has_rotation);
+        if (has_rotation) {
+            Transform3d belt_xform = Transform3d::Identity();
+            belt_xform.linear() = rot;
+            trafo = belt_xform * trafo;
+        }
+    }
+
+    if (!has_remap && !has_rotation)
+        return;
+
+    // 3. Z-shift — detect if the mesh clips below the build plate after the
+    // transforms and lift it.  Each mesh vertex must be brought into object space
+    // via mv->get_matrix() before applying the full trafo (which is in object
+    // space).  Missing this on assemblies (where per-volume get_matrix() positions
+    // each volume within the object) would compute min_z against mesh-local vertex
+    // coordinates rather than object-space coordinates, so volumes translated along
+    // the slicer's Z axis would be silently excluded from the bound check.
+#ifdef SLIC3R_BELT_DIAGNOSTIC_LOG
+    // Capture the incoming trafo for diagnostic logging.
+    // This is the slicer-frame transform AFTER remap + rotation but BEFORE z_shift.
+    const Transform3d trafo_pre_shift = trafo;
+    auto log_mat = [](const Matrix3d &m) {
+        std::ostringstream ss;
+        ss << std::fixed << std::setprecision(4);
+        ss << "[[" << m(0,0) << "," << m(0,1) << "," << m(0,2) << "],"
+           << "["  << m(1,0) << "," << m(1,1) << "," << m(1,2) << "],"
+           << "["  << m(2,0) << "," << m(2,1) << "," << m(2,2) << "]]";
+        return ss.str();
+    };
+    auto log_vec3 = [](const Vec3d &v) {
+        std::ostringstream ss;
+        ss << std::fixed << std::setprecision(4);
+        ss << "(" << v.x() << "," << v.y() << "," << v.z() << ")";
+        return ss.str();
+    };
+    BOOST_LOG_TRIVIAL(trace) << "[BELT-DEBUG] apply_preslice_transforms enter"
+        << " has_rotation=" << has_rotation
+        << " has_remap=" << has_remap
+        << " trafo.linear=" << log_mat(trafo_pre_shift.linear())
+        << " trafo.translation=" << log_vec3(trafo_pre_shift.translation())
+        << " volumes=" << model_volumes.size();
+#endif
+
+    double min_z = std::numeric_limits<double>::max();
+#ifdef SLIC3R_BELT_DIAGNOSTIC_LOG
+    int vol_idx = 0;
+#endif
+    for (const ModelVolume *mv : model_volumes) {
+#ifdef SLIC3R_BELT_DIAGNOSTIC_LOG
+        if (!mv->is_model_part()) { ++vol_idx; continue; }
+#else
+        if (!mv->is_model_part()) continue;
+#endif
+        Transform3d vol_trafo = trafo * mv->get_matrix();
+        const auto &its = mv->mesh().its;
+#ifdef SLIC3R_BELT_DIAGNOSTIC_LOG
+        // Per-volume bbox in mesh-frame and post-trafo slicer-frame.
+        Vec3d mesh_min(std::numeric_limits<double>::max(), std::numeric_limits<double>::max(), std::numeric_limits<double>::max());
+        Vec3d mesh_max(std::numeric_limits<double>::lowest(), std::numeric_limits<double>::lowest(), std::numeric_limits<double>::lowest());
+        Vec3d slicer_min(std::numeric_limits<double>::max(), std::numeric_limits<double>::max(), std::numeric_limits<double>::max());
+        Vec3d slicer_max(std::numeric_limits<double>::lowest(), std::numeric_limits<double>::lowest(), std::numeric_limits<double>::lowest());
+        double vol_min_z = std::numeric_limits<double>::max();
+#endif
+        for (const stl_vertex &v : its.vertices) {
+            Vec3d vm = v.cast<double>();
+            Vec3d pt = vol_trafo * vm;
+            min_z = std::min(min_z, pt.z());
+#ifdef SLIC3R_BELT_DIAGNOSTIC_LOG
+            mesh_min = mesh_min.cwiseMin(vm);
+            mesh_max = mesh_max.cwiseMax(vm);
+            slicer_min = slicer_min.cwiseMin(pt);
+            slicer_max = slicer_max.cwiseMax(pt);
+            vol_min_z = std::min(vol_min_z, pt.z());
+#endif
+        }
+#ifdef SLIC3R_BELT_DIAGNOSTIC_LOG
+        BOOST_LOG_TRIVIAL(trace) << "[BELT-DEBUG]   vol[" << vol_idx
+            << "] id=" << mv->id().id << " name='" << mv->name << "'"
+            << " mesh_bbox_min=" << log_vec3(mesh_min) << " mesh_bbox_max=" << log_vec3(mesh_max)
+            << " get_matrix.translation=" << log_vec3(mv->get_matrix().translation())
+            << " slicer_bbox_min=" << log_vec3(slicer_min) << " slicer_bbox_max=" << log_vec3(slicer_max)
+            << " vol_min_z=" << vol_min_z;
+        ++vol_idx;
+#endif
+    }
+    const double z_shift_val = (min_z < 0. && min_z != std::numeric_limits<double>::max()) ? -min_z : 0.;
+#ifdef SLIC3R_BELT_DIAGNOSTIC_LOG
+    BOOST_LOG_TRIVIAL(trace) << "[BELT-DEBUG] combined min_z=" << min_z
+        << " z_shift_val=" << z_shift_val;
+#endif
+    if (z_shift_val > 0.) {
+        Transform3d z_shift = Transform3d::Identity();
+        z_shift.matrix()(2, 3) = z_shift_val;
+        trafo = z_shift * trafo;
+    }
+    // out_belt_min_z is only meaningful in belt mode; the standalone-remap path
+    // never reported it.
+    if (out_belt_min_z && config.belt_printer.value) {
+        const double new_val = (min_z != std::numeric_limits<double>::max()) ? min_z : 0.;
+#ifdef SLIC3R_BELT_DIAGNOSTIC_LOG
+        BOOST_LOG_TRIVIAL(trace) << "[BELT-DEBUG] write m_belt_min_z tid=" << std::this_thread::get_id()
+            << " target=" << out_belt_min_z << " old=" << *out_belt_min_z << " new=" << new_val;
+#endif
+        *out_belt_min_z = new_val;
+    }
+#ifdef SLIC3R_BELT_DIAGNOSTIC_LOG
+    BOOST_LOG_TRIVIAL(trace) << "[BELT-DEBUG] apply_preslice_transforms exit"
+        << " final_trafo.linear=" << log_mat(trafo.linear())
+        << " final_trafo.translation=" << log_vec3(trafo.translation());
+#endif
+}
+
+} // namespace Slic3r

src/libslic3r/BeltSliceStrategy.hpp

@@ -0,0 +1,36 @@
+#pragma once
+
+#include "libslic3r.h"
+#include "Point.hpp"
+#include "BeltTransform.hpp"
+#include "PrintConfig.hpp"
+#include "Model.hpp"
+
+namespace Slic3r {
+
+// Belt printer / pre-slice transform strategy.
+//
+// Composes, in order, the pre-slice mesh transforms applied before slicing:
+//   1. Pre-slice axis remap (standalone — works without belt mode)
+//   2. Belt rotation (the sole mesh-side belt transform; shear & scale are a
+//      g-code-side stage, see MachineFrameTransform)
+//   3. Per-object Z-shift that lifts the mesh above the build plate
+//
+// Isolates this belt/remap-specific logic from the generic slicing pipeline in
+// PrintObjectSlice.cpp.
+class BeltSliceStrategy
+{
+public:
+    // Apply the pre-slice remap + belt rotation + Z-shift to `trafo` in place.
+    // No-op when neither a remap nor a belt rotation is configured.
+    //
+    // out_belt_min_z (if non-null) receives the minimum mesh Z after the
+    // transforms, but only in belt-printer mode — the standalone-remap path
+    // never reported it.
+    static void apply_preslice_transforms(Transform3d           &trafo,
+                                          const PrintConfig     &config,
+                                          const ModelVolumePtrs &model_volumes,
+                                          double                *out_belt_min_z = nullptr);
+};
+
+} // namespace Slic3r

src/libslic3r/BeltTransform.cpp

@@ -0,0 +1,223 @@
+#include "BeltTransform.hpp"
+#include "Model.hpp"
+
+#include <limits>
+
+namespace Slic3r {
+
+// ---- Matrix builders ------------------------------------------------------
+
+Transform3d BeltTransformPipeline::build_preslice_remap(const PrintConfig &config)
+{
+    Transform3d pre_remap = Transform3d::Identity();
+    if (!has_preslice_remap(config))
+        return pre_remap;
+
+    int pre_rx = int(config.preslice_remap_x.value);
+    int pre_ry = int(config.preslice_remap_y.value);
+    int pre_rz = int(config.preslice_remap_z.value);
+
+    // Each remap value selects a source axis and sign.
+    auto remap_column = [](int r) -> Vec3d {
+        int axis = r % 3;
+        Vec3d col = Vec3d::Zero();
+        if (r < 3)      col[axis] =  1.0;  // +axis
+        else if (r < 6) col[axis] = -1.0;  // -axis
+        else            col[axis] = -1.0;  // Rev: max - pos = -(pos - max)
+        return col;
+    };
+
+    Matrix3d remap_lin;
+    remap_lin.col(0) = remap_column(pre_rx);
+    remap_lin.col(1) = remap_column(pre_ry);
+    remap_lin.col(2) = remap_column(pre_rz);
+    pre_remap.linear() = remap_lin;
+
+    // Translation for Rev modes (needs build volume extents).
+    if (pre_rx >= 6 || pre_ry >= 6 || pre_rz >= 6) {
+        BoundingBoxf bbox_bed(config.printable_area.values);
+        Vec3d vol_max(bbox_bed.max.x(), bbox_bed.max.y(),
+                      config.printable_height.value);
+        Vec3d remap_trans = Vec3d::Zero();
+        auto add_rev = [&](int r, int out) {
+            if (r >= 6) remap_trans[out] = vol_max[r % 3];
+        };
+        add_rev(pre_rx, 0);
+        add_rev(pre_ry, 1);
+        add_rev(pre_rz, 2);
+        pre_remap.translation() = remap_trans;
+    }
+
+    return pre_remap;
+}
+
+Matrix3d BeltTransformPipeline::build_rotation_matrix(const PrintConfig &config, bool *has_rot_out)
+{
+    BeltRotationAxis axis = config.belt_slice_rotation.value;
+    double angle_deg = config.belt_slice_rotation_angle.value;
+    bool active = axis != BeltRotationAxis::None && std::abs(angle_deg) > EPSILON;
+    if (has_rot_out) *has_rot_out = active;
+    if (!active)
+        return Matrix3d::Identity();
+    double angle_rad = Geometry::deg2rad(angle_deg);
+    Vec3d unit_axis;
+    switch (axis) {
+    case BeltRotationAxis::X: unit_axis = Vec3d::UnitX(); break;
+    case BeltRotationAxis::Y: unit_axis = Vec3d::UnitY(); break;
+    case BeltRotationAxis::Z: unit_axis = Vec3d::UnitZ(); break;
+    default:                  return Matrix3d::Identity();
+    }
+    return Eigen::AngleAxisd(angle_rad, unit_axis).toRotationMatrix();
+}
+
+Transform3d BeltTransformPipeline::build_forward_transform(const PrintConfig &config)
+{
+    // Mesh-side belt transform: rotation applied after the pre-slice axis remap.
+    // (Shear & scale are a g-code-side stage, not part of the mesh transform.)
+    Transform3d pre_remap = build_preslice_remap(config);
+    Matrix3d    rot       = build_rotation_matrix(config);
+
+    Transform3d combined = Transform3d::Identity();
+    combined.linear() = rot;
+    combined = combined * pre_remap;
+    return combined;
+}
+
+// ---- Bounding box remap ---------------------------------------------------
+
+BoundingBoxf3 BeltTransformPipeline::remap_bbox(const BoundingBoxf3 &bb, const PrintConfig &config)
+{
+    int pre_rx = int(config.preslice_remap_x.value);
+    int pre_ry = int(config.preslice_remap_y.value);
+    int pre_rz = int(config.preslice_remap_z.value);
+
+    if (pre_rx == int(RemapAxis::PosX) &&
+        pre_ry == int(RemapAxis::PosY) &&
+        pre_rz == int(RemapAxis::PosZ))
+        return bb;  // Identity remap.
+
+    auto remap_coord = [](int r, const Vec3d &v) -> double {
+        int axis = r % 3;
+        if (r < 3) return v[axis];
+        return -v[axis];
+    };
+
+    Vec3d mn = bb.min.cast<double>(), mx = bb.max.cast<double>();
+    BoundingBoxf3 rbb;
+    for (int i = 0; i < 8; ++i) {
+        Vec3d c((i & 1) ? mx.x() : mn.x(),
+                (i & 2) ? mx.y() : mn.y(),
+                (i & 4) ? mx.z() : mn.z());
+        Vec3d rc(remap_coord(pre_rx, c), remap_coord(pre_ry, c), remap_coord(pre_rz, c));
+        if (i == 0) rbb = BoundingBoxf3(rc, rc);
+        else rbb.merge(rc);
+    }
+    return rbb;
+}
+
+BoundingBoxf3 BeltTransformPipeline::remap_bbox(const ModelObject &model_object, const PrintConfig &config)
+{
+    return remap_bbox(model_object.raw_bounding_box(), config);
+}
+
+// ---- Belt floor parameters ------------------------------------------------
+
+// Shared implementation for both PrintConfig and DynamicPrintConfig.
+// Template avoids duplicating the math for the two config types.
+namespace {
+
+template<typename Config>
+BeltTransformPipeline::BeltHeightResult compute_belt_height_and_floor_impl(
+    const Config &config, const BoundingBoxf3 &bb, double original_height)
+{
+    BeltTransformPipeline::BeltHeightResult result;
+    result.object_height = original_height;
+
+    // Extract the mesh rotation from config (the sole mesh-side belt transform).
+    BeltRotationAxis rot_axis;
+    double           rot_angle;
+
+    if constexpr (std::is_same_v<Config, PrintConfig>) {
+        rot_axis  = config.belt_slice_rotation.value;
+        rot_angle = config.belt_slice_rotation_angle.value;
+    } else {
+        // DynamicPrintConfig path
+        auto get_float = [&](const char *key) {
+            auto *opt = config.template option<ConfigOptionFloat>(key);
+            return opt ? opt->value : 0.0;
+        };
+        auto get_rot_axis = [&](const char *key) {
+            auto *opt = config.template option<ConfigOptionEnum<BeltRotationAxis>>(key);
+            return opt ? opt->value : BeltRotationAxis::None;
+        };
+        rot_axis  = get_rot_axis("belt_slice_rotation");
+        rot_angle = get_float("belt_slice_rotation_angle");
+    }
+
+    bool has_rotation = rot_axis != BeltRotationAxis::None && std::abs(rot_angle) > EPSILON;
+    if (!has_rotation)
+        return result;
+
+    // Rotation path: sweep the 8 bbox corners through R to get the rotated height,
+    // then derive the belt floor (the image of machine-Z = 0 under R).
+    double angle_rad = Geometry::deg2rad(rot_angle);
+    Vec3d unit_axis;
+    switch (rot_axis) {
+    case BeltRotationAxis::X: unit_axis = Vec3d::UnitX(); break;
+    case BeltRotationAxis::Y: unit_axis = Vec3d::UnitY(); break;
+    case BeltRotationAxis::Z: unit_axis = Vec3d::UnitZ(); break;
+    default:                  unit_axis = Vec3d::UnitX(); break;
+    }
+    Matrix3d R = Eigen::AngleAxisd(angle_rad, unit_axis).toRotationMatrix();
+    double min_rz = std::numeric_limits<double>::max();
+    double max_rz = std::numeric_limits<double>::lowest();
+    for (int i = 0; i < 8; ++i) {
+        Vec3d c((i & 1) ? bb.max.x() : bb.min.x(),
+                (i & 2) ? bb.max.y() : bb.min.y(),
+                (i & 4) ? bb.max.z() : bb.min.z());
+        double z = (R * c).z();
+        min_rz = std::min(min_rz, z);
+        max_rz = std::max(max_rz, z);
+    }
+    result.object_height = max_rz - min_rz;
+
+    // Belt floor in slicer-frame is the image of z_machine = 0 under R.
+    //   R(+α, X): point (·, y, 0) → (·, cos α · y, sin α · y) ⇒ z = tan(α) · y_s
+    //   R(+α, Y): point (x, ·, 0) → (cos α · x, ·, -sin α · x) ⇒ z = -tan(α) · x_s
+    //   R(+α, Z): point (·, ·, 0) → (·, ·, 0); no tilt → no floor
+    double sin_a = std::sin(angle_rad), cos_a = std::cos(angle_rad);
+    switch (rot_axis) {
+    case BeltRotationAxis::X:
+        result.floor_params.shear_factor = (std::abs(cos_a) > EPSILON) ?  sin_a / cos_a : 0.;
+        result.floor_params.from_axis    = 1; // Y
+        break;
+    case BeltRotationAxis::Y:
+        result.floor_params.shear_factor = (std::abs(cos_a) > EPSILON) ? -sin_a / cos_a : 0.;
+        result.floor_params.from_axis    = 0; // X
+        break;
+    case BeltRotationAxis::Z:
+    default:
+        result.floor_params.shear_factor = 0.0;
+        result.floor_params.from_axis    = 1;
+        break;
+    }
+    result.floor_params.z_shift = bb.min.z() + ((min_rz < 0.) ? -min_rz : 0.);
+
+    return result;
+}
+
+} // anonymous namespace
+
+BeltTransformPipeline::BeltHeightResult BeltTransformPipeline::compute_belt_height_and_floor(
+    const PrintConfig &config, const BoundingBoxf3 &remapped_bbox, double original_height)
+{
+    return compute_belt_height_and_floor_impl(config, remapped_bbox, original_height);
+}
+
+BeltTransformPipeline::BeltHeightResult BeltTransformPipeline::compute_belt_height_and_floor(
+    const DynamicPrintConfig &config, const BoundingBoxf3 &remapped_bbox, double original_height)
+{
+    return compute_belt_height_and_floor_impl(config, remapped_bbox, original_height);
+}
+
+} // namespace Slic3r

src/libslic3r/BeltTransform.hpp

@@ -0,0 +1,152 @@
+#pragma once
+
+#include "libslic3r.h"
+#include "Point.hpp"
+#include "BoundingBox.hpp"
+#include "PrintConfig.hpp"
+#include "Geometry.hpp"
+
+#include <cmath>
+
+namespace Slic3r {
+
+class ModelObject;
+
+// Shared belt-printer transform math.
+//
+// The pre-slice pipeline applied in PrintObjectSlice.cpp is:
+//     trafo_out = z_shift * rotation * pre_remap * trafo_in
+//
+// Rotation is the sole mesh-side belt transform; shear & scale are applied
+// to the g-code instead (see MachineFrameTransform).  This class provides the
+// building blocks so every call site uses the same implementation.  z_shift is
+// object-dependent (computed from mesh vertex bounds) and is NOT included in
+// build_forward_transform().  The machine-frame shear/scale is derived directly
+// from the tilt angle in MachineFrameTransform and no longer lives here.
+//
+// Design note: this mesh-rotation approach replaced an earlier pre-shear
+// method (now removed).  While that initial pre-shear method was instrumental
+// in getting belt printer slicing off the ground in the first place, its place is
+// in the past.  A big thank you goes to the Unlayered3D team, who recommended 
+// switching to a pre-slice rotation stage instead.  Doing so keeps the slicing 
+// operation isometric — no distortion of the sliced geometry — while the 
+// non-orthogonal machine-axis compensation is confined to a g-code-side shear/scale
+// derived from the same tilt angle.
+// 
+// This fixed a number of issues, including several issues noticed by hotcubcar
+// regarding adaptive infills not working, gyroid becoming anisotropic, and more 
+// that were all mostly resolved as a result of the switch.
+// 
+// This also means that the pre-slice rotation transform methodology can be used 
+// more cleanly on non-belt printers.
+// - HarrierPigeon (Joseph Robertson)
+
+class BeltTransformPipeline
+{
+public:
+    // ---- Identity checks --------------------------------------------------
+
+    static bool has_preslice_remap(const PrintConfig &config)
+    {
+        return int(config.preslice_remap_x.value) != int(RemapAxis::PosX) ||
+               int(config.preslice_remap_y.value) != int(RemapAxis::PosY) ||
+               int(config.preslice_remap_z.value) != int(RemapAxis::PosZ);
+    }
+
+    // Overload accepting DynamicPrintConfig (used in static slicing_parameters).
+    static bool has_preslice_remap(const DynamicPrintConfig &config)
+    {
+        auto get_int = [&](const char *key) -> int {
+            auto *opt = config.option<ConfigOptionEnum<RemapAxis>>(key);
+            return opt ? int(opt->value) : 0;
+        };
+        return get_int("preslice_remap_x") != int(RemapAxis::PosX) ||
+               get_int("preslice_remap_y") != int(RemapAxis::PosY) ||
+               get_int("preslice_remap_z") != int(RemapAxis::PosZ);
+    }
+
+    static bool has_rotation(const PrintConfig &config)
+    {
+        return config.belt_slice_rotation.value != BeltRotationAxis::None &&
+               std::abs(config.belt_slice_rotation_angle.value) > EPSILON;
+    }
+
+    // Physical belt tilt derived from the slicing rotation — the single source of
+    // truth for bed rendering, support gravity tilt and the bed-exclusion
+    // projection.  Returns the tilt magnitude in degrees split onto the X and Y
+    // build-plate tilt axes according to the rotation axis:
+    //   rotation about X  → tilt_x = angle   (gantry tilts in the YZ plane)
+    //   rotation about Y  → tilt_y = angle   (gantry tilts in the XZ plane)
+    //   rotation about Z / None → no tilt    (in-plane spin doesn't tilt the belt)
+    // The magnitude uses abs(angle) so a negative rotation still reports a positive
+    // physical tilt.
+    struct PhysicalTilt { double tilt_x_deg = 0.; double tilt_y_deg = 0.; };
+
+    static PhysicalTilt physical_tilt(BeltRotationAxis axis, double angle_deg)
+    {
+        PhysicalTilt t;
+        double mag = std::abs(angle_deg);
+        switch (axis) {
+        case BeltRotationAxis::X: t.tilt_x_deg = mag; break;
+        case BeltRotationAxis::Y: t.tilt_y_deg = mag; break;
+        default: break; // Z / None: no physical tilt
+        }
+        return t;
+    }
+
+    static PhysicalTilt physical_tilt(const PrintConfig &config)
+    {
+        return physical_tilt(config.belt_slice_rotation.value,
+                             config.belt_slice_rotation_angle.value);
+    }
+
+    // ---- Matrix builders --------------------------------------------------
+
+    // Build the pre-slice axis remap transform (includes Rev-mode translation).
+    static Transform3d build_preslice_remap(const PrintConfig &config);
+
+    // Build the 3x3 rotation matrix from belt_slice_rotation* config.
+    // Returns Identity if rotation axis is None or angle is ~0.
+    // Also sets has_rot_out if non-null.
+    static Matrix3d build_rotation_matrix(const PrintConfig &config, bool *has_rot_out = nullptr);
+
+    // Combined forward transform (rotation * pre_remap) — the mesh-side belt
+    // transform that BeltSliceStrategy applies and BeltBackTransform inverts.
+    // Does NOT include the per-object Z-shift.
+    static Transform3d build_forward_transform(const PrintConfig &config);
+
+    // ---- Bounding box remap -----------------------------------------------
+
+    // Remap a bounding box through the pre-slice axis remap.
+    // Returns the original bbox if remap is identity.
+    static BoundingBoxf3 remap_bbox(const BoundingBoxf3 &bb, const PrintConfig &config);
+    static BoundingBoxf3 remap_bbox(const ModelObject &model_object, const PrintConfig &config);
+
+    // ---- Belt floor parameters --------------------------------------------
+
+    struct BeltFloorParams {
+        double shear_factor = 0.0;
+        int    from_axis    = 1;
+        double z_shift      = 0.0;
+    };
+
+    // Result of computing belt height + floor params.
+    struct BeltHeightResult {
+        double          object_height;  // Effective object height after shear/scale
+        BeltFloorParams floor_params;
+    };
+
+    // Compute effective object height and belt floor parameters from config
+    // and pre-remapped bounding box.  original_height is the input height
+    // (bb.size().z() or model_object.max_z()).
+    static BeltHeightResult compute_belt_height_and_floor(
+        const PrintConfig &config, const BoundingBoxf3 &remapped_bbox,
+        double original_height);
+
+    // Overload for DynamicPrintConfig (used by static slicing_parameters).
+    static BeltHeightResult compute_belt_height_and_floor(
+        const DynamicPrintConfig &config, const BoundingBoxf3 &remapped_bbox,
+        double original_height);
+};
+
+} // namespace Slic3r

src/libslic3r/Brim.cpp

@@ -449,7 +449,9 @@ static ExPolygons outer_inner_brim_area(const Print& print,
             const bool         use_brim_ears = object->config().brim_type == btPainted;
             const bool         use_inner_brim_ears = (use_auto_brim_ears || use_brim_ears) && !object->config().brim_ears_outer_only.value;
             const bool         has_inner_brim = brim_type == btInnerOnly || brim_type == btOuterAndInner || use_inner_brim_ears;
-            const bool         has_outer_brim = brim_type == btOuterOnly || brim_type == btOuterAndInner || brim_type == btAutoBrim || use_auto_brim_ears || use_brim_ears;
+            // btLeadingEdgeOnly is a belt-printer mode; on a flat bed there is no leading
+            // edge, so it degrades to an ordinary outer brim rather than silently to none.
+            const bool         has_outer_brim = brim_type == btOuterOnly || brim_type == btOuterAndInner || brim_type == btAutoBrim || brim_type == btLeadingEdgeOnly || use_auto_brim_ears || use_brim_ears;
             coord_t            ear_detection_length = scale_(object->config().brim_ears_detection_length.value);
             coordf_t           brim_ears_max_angle = object->config().brim_ears_max_angle.value;
             //ORCA: Select brim base slices from EFC-compensated outline when enabled.
@@ -864,6 +866,17 @@ void make_brim(const Print& print, PrintTryCancel try_cancel, Polygons& islands_
     std::vector<unsigned int>& printExtruders,
     std::map<ObjectInstanceID, ExPolygons>* objectBrimAreasByInstanceOut)
 {
+    // Belt printers never use the flat plate brim.
+    //
+    // With a tilted belt the brim has to be laid onto the belt plane over many layers,
+    // which BeltBrim.cpp does during posSupportMaterial.  With an untilted belt this
+    // could in principle fall through and produce an ordinary brim, but it would never
+    // reach the G-code: the plate brim is emitted out of skirt_brim_groups(), which
+    // _make_skirt() builds, and that returns early for every belt printer.  Running the
+    // generator anyway would just burn time on geometry nobody prints.
+    if (print.config().belt_printer.value)
+        return;
+
     std::map<ObjectInstanceID, ExPolygons> brimAreaMap;
     Flow                 flow = print.brim_flow();
     ExPolygons           islands_area_ex = outer_inner_brim_area(print,

src/libslic3r/BuildVolume.cpp

@@ -176,6 +176,31 @@ BuildVolume::BuildVolume(const std::vector<Vec2d> &printable_area, const double
     BOOST_LOG_TRIVIAL(debug) << "BuildVolume printable_area clasified as: " << this->type_name();
 }
 
+void BuildVolume::set_belt_printer(bool enabled, double angle_deg, bool infinite_y)
+{
+    m_is_belt_printer = enabled;
+    m_belt_angle = angle_deg;
+    m_belt_infinite_y = infinite_y;
+
+    // Restart from the unmodified bbox each call. Without this, toggling
+    // belt mode off (or switching infinite_y true→false) would leave the
+    // extents inflated and break collision / object_state checks.
+    BoundingBoxf bboxf = get_extents(m_bed_shape);
+    m_bboxf = BoundingBoxf3{ to_3d(bboxf.min, 0.), to_3d(bboxf.max, m_max_print_height) };
+
+    if (enabled) {
+        if (infinite_y) {
+            // Extend the Y bound to a very large value for infinite belt.
+            m_bboxf.max.y() = 100000.;
+        }
+        // Belt printer: the Z extent already equals printable_height (set above), which
+        // is the usable vertical clearance above the belt. The gantry's axis range is
+        // sized to reach height/cos(tilt), so no diagonal scaling is applied here — this
+        // keeps the live "outside build volume" highlight in agreement with Print::validate().
+        (void) angle_deg;
+    }
+}
+
 #if 0
 // Tests intersections of projected triangles, not just their vertices against a bounding box.
 // This test also correctly evaluates collision of a non-convex object with the bounding box.
@@ -384,6 +409,11 @@ BuildVolume::ObjectState BuildVolume::object_state(const indexed_triangle_set& i
             build_volume.max.z() = std::numeric_limits<double>::max();
         if (ignore_bottom)
             build_volume.min.z() = -std::numeric_limits<double>::max();
+        // Belt printer: extend Y bounds for infinite Y.
+        if (m_is_belt_printer && m_belt_infinite_y) {
+            build_volume.min.y() = -std::numeric_limits<double>::max();
+            build_volume.max.y() = std::numeric_limits<double>::max();
+        }
         BoundingBox3Base<Vec3f> build_volumef(build_volume.min.cast<float>(), build_volume.max.cast<float>());
         // The following test correctly interprets intersection of a non-convex object with a rectangular build volume.
         //return rectangle_test(its, trafo, to_2d(build_volume.min), to_2d(build_volume.max), build_volume.max.z());

src/libslic3r/BuildVolume.hpp

@@ -57,6 +57,10 @@ public:
     // Initialize from PrintConfig::printable_area and PrintConfig::printable_height
     BuildVolume(const std::vector<Vec2d> &printable_area, const double printable_height, const std::vector<std::vector<Vec2d>> &extruder_areas, const std::vector<double>& extruder_printable_heights);
 
+    // Belt printer configuration.
+    void set_belt_printer(bool enabled, double angle_deg, bool infinite_y);
+    bool is_belt_printer() const { return m_is_belt_printer; }
+
     // Source data, unscaled coordinates.
     const std::vector<Vec2d>&   printable_area()         const { return m_bed_shape; }
     double                      printable_height()  const { return m_max_print_height; }
@@ -80,7 +84,7 @@ public:
     indexed_triangle_set        bounding_mesh(bool scale=true) const;
 
     // Center of the print bed, unscaled.
-    Vec2d                       bed_center()        const { return to_2d(m_bboxf.center()); }
+    Vec2d                       bed_center()        const { return get_extents(m_bed_shape).center(); }
     // Convex hull of polygon(), scaled.
     const Polygon&              convex_hull()       const { return m_convex_hull; }
     // Smallest enclosing circle of polygon(), scaled.
@@ -139,6 +143,10 @@ private:
     // Source definition of the print volume height (PrintConfig::printable_height)
     double              m_max_print_height { 0.f };
     std::vector<double> m_extruder_printable_height;
+    // Belt printer state.
+    bool                m_is_belt_printer { false };
+    double              m_belt_angle { 0. };
+    bool                m_belt_infinite_y { false };
 
     // Derived values.
     BuildVolume_Type                m_type { BuildVolume_Type::Invalid };

src/libslic3r/CMakeLists.txt

@@ -80,6 +80,19 @@ set(lisbslic3r_sources
     BoundingBox.hpp
     BridgeDetector.cpp
     BridgeDetector.hpp
+    BeltBrim.cpp
+    BeltBrim.hpp
+    BeltGCode.cpp
+    BeltGCode.hpp
+    BeltGCodeWriter.cpp
+    BeltGCodeWriter.hpp
+    BeltPurge.cpp
+    BeltSliceStrategy.cpp
+    BeltSliceStrategy.hpp
+    BeltTransform.cpp
+    BeltTransform.hpp
+    FirstLayerPlane.cpp
+    FirstLayerPlane.hpp
     Brim.cpp
     BrimEarsPoint.hpp
     Brim.hpp
@@ -226,6 +239,10 @@ set(lisbslic3r_sources
     GCode/AdaptivePAProcessor.hpp
     GCode/AvoidCrossingPerimeters.cpp
     GCode/AvoidCrossingPerimeters.hpp
+    GCode/BeltBackTransform.cpp
+    GCode/BeltBackTransform.hpp
+    GCode/MachineFrameTransform.cpp
+    GCode/MachineFrameTransform.hpp
     GCode/ConflictChecker.cpp
     GCode/ConflictChecker.hpp
     GCode/CoolingBuffer.cpp
@@ -436,6 +453,8 @@ set(lisbslic3r_sources
     SlicingAdaptive.hpp
     Slicing.cpp
     Slicing.hpp
+    Support/BeltFloorContext.cpp
+    Support/BeltFloorContext.hpp
     Support/SupportCommon.cpp
     Support/SupportCommon.hpp
     Support/SupportLayer.hpp

src/libslic3r/Clipper2Utils.cpp

@@ -13,8 +13,8 @@ Slic3r::Polylines Paths64_to_polylines(const Clipper2Lib::Paths64& in)
         Slic3r::Points points;
         points.reserve(path64.size());
         for (const Clipper2Lib::Point64& point64 : path64)
-            points.emplace_back(std::move(Slic3r::Point(point64.x, point64.y)));
+            points.emplace_back(Slic3r::Point(point64.x, point64.y));
-        out.emplace_back(std::move(Slic3r::Polyline(points)));
+        out.emplace_back(Slic3r::Polyline(points));
     }
     return out;
 }
@@ -29,7 +29,7 @@ Clipper2Lib::Paths64 Slic3rPoints_to_Paths64(const Container& in)
         Clipper2Lib::Path64 path;
         path.reserve(item.size());
         for (const Slic3r::Point& point : item.points)
-            path.emplace_back(std::move(Clipper2Lib::Point64(point.x(), point.y())));
+            path.emplace_back(Clipper2Lib::Point64(point.x(), point.y()));
         out.emplace_back(std::move(path));
     }
     return out;
@@ -44,7 +44,7 @@ Points Path64ToPoints(const Clipper2Lib::Path64& path64)
 {
     Points points;
     points.reserve(path64.size());
-    for (const Clipper2Lib::Point64 &point64 : path64) points.emplace_back(std::move(Slic3r::Point(point64.x, point64.y)));
+    for (const Clipper2Lib::Point64 &point64 : path64) points.emplace_back(Slic3r::Point(point64.x, point64.y));
     return points;
 }
 
@@ -99,7 +99,7 @@ Clipper2Lib::Paths64 Slic3rPolygons_to_Paths64(const Polygons &in)
     for (const Polygon &poly : in) {
         Clipper2Lib::Path64 path;
         path.reserve(poly.points.size());
-        for (const Slic3r::Point &point : poly.points) path.emplace_back(std::move(Clipper2Lib::Point64(point.x(), point.y())));
+        for (const Slic3r::Point &point : poly.points) path.emplace_back(Clipper2Lib::Point64(point.x(), point.y()));
         out.emplace_back(std::move(path));
     }
     return out;
@@ -114,7 +114,7 @@ Clipper2Lib::Paths64 Slic3rExPolygons_to_Paths64(const ExPolygons& in)
             const auto         &poly = expolygon.contour_or_hole(i);
             Clipper2Lib::Path64 path;
             path.reserve(poly.points.size());
-            for (const Slic3r::Point &point : poly.points) path.emplace_back(std::move(Clipper2Lib::Point64(point.x(), point.y())));
+            for (const Slic3r::Point &point : poly.points) path.emplace_back(Clipper2Lib::Point64(point.x(), point.y()));
             out.emplace_back(std::move(path));
         }
     }
@@ -134,8 +134,8 @@ Polylines _clipper2_pl_open(Clipper2Lib::ClipType clipType, const Slic3r::Polyli
 
     Slic3r::Polylines out;
     out.reserve(solution.size() + solution_open.size());
-    polylines_append(out, std::move(Paths64_to_polylines(solution)));
+    polylines_append(out, Paths64_to_polylines(solution));
-    polylines_append(out, std::move(Paths64_to_polylines(solution_open)));
+    polylines_append(out, Paths64_to_polylines(solution_open));
 
     return out;
 }