2c0867619c
Implements phase v3.0 of filament_id_plan_v3.md - tooling and client
prerequisites. No filament_id values change in this commit.
Tooling (scripts/assign_filament_ids.py; 106 unit tests):
- The mint key becomes "filament_product/<filament_vendor>/<filament_type>/
<family_name>", resolved loader-faithfully from the declarer's flattened
config - bundle-independent and content-addressed; identity fixes re-id
by design and are made safe by the succession ledger. --mint now takes
the triple.
- The snapshot gains "triples" and "triple_exceptions" sections, folded
into the equality gate: any vendor/type/name change surfaces as a
reviewable snapshot diff. Check 3 rewritten to triple-mint conformance
with (id, triple) grandfathering; check 5 generalized from OFL generics
to every OFL-riding vendor preset; new check 8 (triple integrity) and
check 9 (succession integrity).
- The retired ledger moves to resources/profiles/retired_filament_ids.json
so it ships with the app; schema {claims, successor} plus cross-island
"hints". The 14 v1 entries are migrated with mode-rule successors.
Vanished ids in a foreign island's space (GF*/QD_*) are RELEASED with a
hint instead of retired: the island catalog owns them and may
legitimately (re)ship them, which check 4 must never block.
- New maintenance modes: --remint VENDOR, --drop-redundant-ids VENDOR,
--add-hint "OLD=NEW", and --update-snapshot --forget-never-shipped FILE
(never-shipped ids drop from lineage; chains splice through them).
Runtime (C++):
- Succession helpers in libslic3r/Preset (pure chain-follow + lazy ledger
load from resources), consulted only on resolution miss in
get_filament_by_filament_id, both AMS sync predicates,
add_ams_filaments, setting_id_to_type, and the calibration-history
lookup; behavior is byte-identical while the ledger has no matching
entry. Catch2 coverage in tests/libslic3r.
- W1 hardening: check_ams_filament_valid no longer remote-wipes trays or
rewrites temps for P-shaped ids that a system preset carries (ten such
system ids ship today); the size==8 && [0]=='P' assert is relaxed; the
unguarded filament_list find deref in the temp-equation check returns
non-destructively on a miss.
- MoonrakerPrinterAgent: the 23 hardcoded OFL generic ids are replaced by
a runtime lookup of "Generic <family> @System" (id-equivalent on
today's shipped profiles, follows future re-mints automatically);
scripts/test_moonraker_lane_data.py derives its expectations from the
shipped profiles and gains --check-ofl-map.
Profile data (W3 - type is now a key component, so type bugs are fixed
before any re-mint):
- 17 same-name-different-type groups corrected across 50 files (OFL
Generic PETG-CF/PE-CF/PP-CF; Flashforge ASA Basic/ASA-CF/ABS-CF/HIPS/
PAHT-CF/PLA Silk; FusRock PAHT; Creality Generic PA6-CF; InfiMech PETG;
Anycubic TPU 95A / TPU for ACE; Prusa Generic PA-CF/PLA-CF) - every
value validated against MaterialType::all(); 3 Snapmaker U1 roots gain
their missing filament_vendor. Flattened-config equivalence vs the
previous commit: exactly the 54 intended diffs, zero BBL.
- doc/developer-reference/filament_id.md rewritten for the v3 rule.
Ambiguous type divergences (Prusa Generic TPU/TPU HF FLEX-vs-TPU, FusRock
S-Multi/S-PAHT) and all same-type vendor-tag divergences are deferred to
the v3.2 vendor worksheets, catalogued with analysis.
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.
How to install
Windows
Download the Windows Installer exe for your preferred version from the releases page.
-
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
Windows Package Manager
winget install --id=SoftFever.OrcaSlicer -e
Mac
-
Download the DMG for your computer:
arm64version for Apple Silicon andx86_64for Intel CPU. -
Drag OrcaSlicer.app to Application folder.
-
If you want to run a build from a PR, you also need to follow the instructions below:
Quarantine
-
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
-
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
-
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).
-
Download App image from the releases page.
-
Double click the downloaded file to run it.
-
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 I'm deeply grateful to all my sponsors and backers.
Their generous support enables me to purchase filaments and other essential 3D printing materials for the project.
Thank you! :)
Sponsors
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Backers:
Ko-fi supporters ☕: Backers list
Support me
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.