cc390f11ee
* fix(deps): build the dependencies from scratch with clang-cl Six dependencies fail once the superbuild compiles them with clang-cl instead of cl: - OpenSSL never goes through CMake. Its VC-WIN64A makefile only works with cl, and an unquoted clang-cl path with spaces produces no .obj files at all, so the lib step dies with LNK1181. Pin the upstream toolchain. - Boost.Container's bundled dlmalloc passes int* to the Interlocked API. cl warns, clang rejects it. - curl 7.75's configure probes rely on C laxness clang rejects. The results flip and nonblock.c ends up in the AmigaOS IoctlSocket branch. - OCCT installs RelWithDebInfo into bini/libi while find_package looks in lib. It also prepends -Wl,-s to the shared linker flags for every Clang build, which the MSVC-style linker gets as an argument it does not know. Both patched hunks sit inside if (MSVC) in the OCCT sources. - wxWidgets lands in lib/clang_x64_lib, so wxWidgetsConfig.cmake falls back to the layout that exists instead of assuming vc_x64_lib. It tries the derived path first, so a cl-built tree consumed by clang-cl keeps resolving the way it does today. The patch step also resets the one file it touches, so it can run again after an interrupted build or after the patch itself changed. - wxInspector goes through FindwxWidgets, which only searches lib/vc*_lib because _WX_TOOL is hardcoded to vc. It now gets the root and lib dir derived the same way wxWidgetsConfig.cmake derives them. Eigen is the seventh, and it breaks on the generator rather than the compiler. Its test, lapack and blas/testing subdirectories all call enable_language(Fortran), and they default to ON because the dependency configures as its own top-level project. Whether that hurts depends on what CMake finds: the Visual Studio generator supports no Fortran and finds nothing, clang-cl sits next to the LLVM toolset's flang and works, while MSVC with Ninja finds Strawberry Perl's MinGW gfortran, which this 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 every dependency still in flight with it. Only the headers are consumed here, so the three subprojects are off. * fix(deps): honor the superbuild's generator and compiler in sub-builds orcaslicer_add_cmake_project pinned every dependency sub-build to the Visual Studio generator whenever MSVC was true, which is also true for clang-cl. That generator selects its compiler by toolset and ignores the CMAKE_C_COMPILER and CMAKE_CXX_COMPILER this file already forwards, so the dependencies were built with cl.exe no matter which generator or compiler the superbuild was given. Key the three affected decisions on the generator instead: which generator the sub-builds use, whether CMAKE_BUILD_TYPE is forwarded, and /m versus -j. A Visual Studio superbuild is unchanged, so the default path and CI behave exactly as they do today. build_release_vs.bat now accepts -l to select clang-cl, alongside the existing -x for Ninja, so the generator and the compiler can be chosen independently. On the Visual Studio generator -l reaches the slicer only, through the ClangCL toolset, because the dependency sub-builds have no toolset to inherit; a deps build in that combination says so rather than quietly using MSVC. * fix(deps): use upstream wxWidgets compiler layout fix The compiler-prefix layout fix now comes from SoftFever/Orca-deps-wxWidgets#7, so remove the duplicated local patch and apply step. * fix(deps): stop Assimp enabling ccache on the RC rule ASSIMP_BUILD_USE_CCACHE defaults on and applies the launcher through the global RULE_LAUNCH_COMPILE property, so it wraps the resource-compiler rule as well. Under Ninja that rule goes through cmcldeps, which does not survive being launched by ccache, and the build fails with clang-cl reporting /fo as a missing file. The superbuild already forwards CMAKE_<LANG>_COMPILER_LAUNCHER, which CMake applies per language and so keeps clear of the RC rule. --------- Co-authored-by: SoftFever <103989404+SoftFever@users.noreply.github.com> Co-authored-by: raistlin7447 <kris.austin@gmail.com>
OrcaSlicer: an open source Next-Gen Slicing Software for Precision 3D Prints.
Optimize your prints with ultra-fast slicing, intelligent support generation, and seamless printer compatibility—engineered for perfection.
Official links and community
Official Website:
Github Repository:
Follow us:
Join our Discord community:
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Main features
- Advanced Calibration Tools
Comprehensive suite: temperature towers, flow rate, retraction & more for optimal performance. - Precise Wall and Seam Control
Adjust outer wall spacing and apply scarf seams to enhance print accuracy. - Sandwich Mode and Polyholes Support
Use varied infill patterns and accurate hole shapes for improved clarity. - Overhang and Support Optimization
Modify geometry for printable overhangs with precise support placement. - Granular Controls and Customization
Fine-tune print speed, layer height, pressure, and temperature with precision. - Network Printer Support
Seamless integration with Klipper, PrusaLink, and OctoPrint for remote control. - Mouse Ear Brims & Adaptive Bed Mesh
Automatic brims and adaptive mesh calibration ensure consistent adhesion. - User-Friendly Interface
Intuitive drag-and-drop design with pre-made profiles for popular printers. - Open-Source & Community Driven
Regular updates fueled by continuous community contributions. - Wide Printer Compatibility
Supports a broad range of printers: Bambu Lab, Prusa, Creality, Voron, and more. - Additional features can be found in the change notes.
Wiki
The wiki aims to provide a detailed explanation of the slicer settings, including how to maximize their use and how to calibrate and set up your printer.
Download
Stable Release
📥 Download the Latest Stable Release
Visit our GitHub Releases page for the latest stable version of OrcaSlicer, recommended for most users.
Nightly Builds
🌙 Download the Latest Nightly Build
Explore the latest developments in OrcaSlicer with our nightly builds. Feedback on these versions is highly appreciated.
Belt Printer Builds
The nightly release ships two parallel builds: the standard build and a belt-printer build. Both are attached to the same release — tell them apart by the filename suffix:
- Standard — no suffix (e.g.
OrcaSlicer_Windows_Installer_x64_nightly.exe) - Belt —
_beltsuffix (e.g.OrcaSlicer_Windows_Installer_x64_nightly_belt.exe)
The _belt builds add experimental support for belt / conveyor (infinite-Z) printers, where the model is sliced against a tilted belt surface instead of a flat horizontal bed. They include ready-to-use belt printer profiles, the full belt slicing pipeline (mesh rotation and G-code transforms), belt-aware support generation, and a tilted-bed preview.
⚠️ Belt printer support is under active development and is not yet merged into
main— it currently ships only in these parallel_beltbuilds, produced from thebelt-printerbranch. See tracking PR #14394 and the original documentation in #12998.
How to install
Windows
Download the Windows Installer exe for your preferred version from the releases page. Both x64 and arm64 installers are published — pick the one matching your CPU.
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For convenience there is also a portable build available.
Troubleshooting
- If you have troubles to run the build, you might need to install following runtimes:
- MicrosoftEdgeWebView2RuntimeInstallerX64
- vcredist2019_x64
- Alternative Download Link Hosted by Microsoft
- This file may already be available on your computer if you've installed visual studio. Check the following location:
%VCINSTALLDIR%Redist\MSVC\v142
Microsoft Store
Install from the Microsoft Store when you prefer a Store-signed package (helps on Windows 11 Smart App Control).
Windows Package Manager
winget install --id=SoftFever.OrcaSlicer -e
Mac
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Download the universal DMG, which runs on both Apple Silicon and Intel Macs.
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Drag OrcaSlicer.app to Application folder.
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If you want to run a build from a PR, you also need to follow the instructions below:
Quarantine
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Option 1 (You only need to do this once. After that the app can be opened normally.):
- Step 1: Hold cmd and right click the app, from the context menu choose Open.
- Step 2: A warning window will pop up, click Open
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Option 2: Execute this command in terminal:
xattr -dr com.apple.quarantine /Applications/OrcaSlicer.app -
Option 3:
- Step 1: open the app, a warning window will pop up
- Step 2: in
System Settings->Privacy & Security, clickOpen Anyway:
- Step 1: open the app, a warning window will pop up
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Homebrew Cask
brew install --cask orcaslicer
The Homebrew cask installs the official macOS DMG from GitHub Releases.
Linux
Flathub (Recommended)
OrcaSlicer is available through FlatHub:
Install from the command line:
flatpak install flathub com.orcaslicer.OrcaSlicer
flatpak run com.orcaslicer.OrcaSlicer
It can also be installed through graphical software managers (KDE Discover, GNOME Software, etc.) when Flathub is enabled. Search for OrcaSlicer in your software center.
AppImage
AppImages are published for both x86_64 and aarch64 (ARM64). Pick the file matching your CPU — the ARM64 build has aarch64 in its name (e.g. OrcaSlicer_Linux_AppImage_Ubuntu2404_aarch64_*.AppImage).
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Download App image from the releases page.
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Double click the downloaded file to run it.
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If you run into trouble executing it, try this command in the terminal:
chmod +x /path_to_appimage/OrcaSlicer_Linux.AppImage
How to Compile
All updated build instructions for Windows, macOS, and Linux are now available on the official OrcaSlicer Wiki - How to build page.
Please refer to the wiki to ensure you're following the latest and most accurate steps for your platform.
Klipper Note
If you're running Klipper, it's recommended to add the following configuration to your printer.cfg file.
# Enable object exclusion
[exclude_object]
# Enable arcs support
[gcode_arcs]
resolution: 0.1
Supports
OrcaSlicer is an open-source project, and we're deeply grateful to all our sponsors and backers.
Their generous support helps fund filaments and other essential 3D printing materials for the project.
Thank you! :)
Sponsors
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Backers:
Ko-fi supporters ☕: Backers list
Support the project
Some Background
Open-source slicing has always been built on a tradition of collaboration and attribution. Slic3r, created by Alessandro Ranellucci and the RepRap community, laid the foundation. PrusaSlicer by Prusa Research built on Slic3r and acknowledged that heritage. Bambu Studio in turn forked from PrusaSlicer, and SuperSlicer by @supermerill extended PrusaSlicer with community-driven enhancements. Each project carried the work of its predecessors forward, crediting those who came before.
OrcaSlicer began in that same spirit, drawing from BambuStudio, PrusaSlicer, and ideas inspired by CuraSlicer and SuperSlicer. But it has since grown far beyond its origins. Through relentless innovation — introducing advanced calibration tools, precise wall and seam control, tree supports, adaptive slicing, and hundreds of other features — OrcaSlicer has become the most widely used and actively developed open-source slicer in the 3D printing community. Many of its innovations have been adopted by other slicers, making it a driving force for the entire industry.
The OrcaSlicer logo was designed by community member Justin Levine.
License
- OrcaSlicer is licensed under the GNU Affero General Public License, version 3.
- The GNU Affero General Public License, version 3 ensures that if you use any part of this software in any way (even behind a web server), your software must be released under the same license.
- OrcaSlicer includes a pressure advance calibration pattern test adapted from Andrew Ellis' generator, which is licensed under GNU General Public License, version 3. Ellis' generator is itself adapted from a generator developed by Sineos for Marlin, which is licensed under GNU General Public License, version 3.
- The Bambu networking plugin is based on non-free libraries from BambuLab. It is optional to the OrcaSlicer and provides extended functionalities for Bambulab printer users.