[![GitHub Repo stars](https://img.shields.io/github/stars/OrcaSlicer/OrcaSlicer)](https://github.com/OrcaSlicer/OrcaSlicer/stargazers) [![Build all](https://github.com/OrcaSlicer/OrcaSlicer/actions/workflows/build_all.yml/badge.svg?branch=main)](https://github.com/OrcaSlicer/OrcaSlicer/actions/workflows/build_all.yml) 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: OrcaSlicer.com #### Github Repository:

#### Follow us:

#### Join our Discord community:

⚠️ CAUTION:
Several clickbait and malicious websites, such as orca-slicer[.]com and orcaslicer[.]net, are pretending to be the official OrcaSlicer site. These sites may redirect you to dangerous downloads or contain misleading information.
Our only official website is www.orcaslicer.com.

If you come across any of these in search results, please report them as unsafe or phishing to help keep the community secure with:
- Google Safe Browsing
- Microsoft Security Intelligence
- IPThreat

# Main features - **[Advanced Calibration Tools](https://www.orcaslicer.com/wiki/calibration_guide)** Comprehensive suite: temperature towers, flow rate, retraction & more for optimal performance. - **[Precise Wall](https://www.orcaslicer.com/wiki/quality_settings_precision#precise-wall) and [Seam Control](https://www.orcaslicer.com/wiki/quality_settings_seam)** Adjust outer wall spacing and apply scarf seams to enhance print accuracy. - **[Sandwich Mode](https://www.orcaslicer.com/wiki/quality_settings_wall_and_surfaces#innerouterinner) and [Polyholes](https://www.orcaslicer.com/wiki/quality_settings_precision#polyholes) Support** Use varied infill [patterns](https://www.orcaslicer.com/wiki/strength_settings_patterns) and accurate hole shapes for improved clarity. - **[Overhang](https://www.orcaslicer.com/wiki/quality_settings_overhangs) and [Support Optimization](https://www.orcaslicer.com/wiki#support-settings)** Modify geometry for printable overhangs with precise support placement. - **[Granular Controls and Customization](https://www.orcaslicer.com/wiki#process-settings)** 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](https://www.orcaslicer.com/wiki/others_settings_brim) & [Adaptive Bed Mesh](https://www.orcaslicer.com/wiki/printer_basic_information_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](https://github.com/OrcaSlicer/OrcaSlicer) & [Community Driven](https://discord.gg/P4VE9UY9gJ)** 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](https://github.com/OrcaSlicer/OrcaSlicer/releases/). # Wiki The [wiki](https://www.orcaslicer.com/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. - **[Access the wiki here](https://www.orcaslicer.com/wiki)** - **[Contribute to the wiki](https://www.orcaslicer.com/wiki/how_to_wiki)** # Download ## Stable Release 📥 **[Download the Latest Stable Release](https://github.com/OrcaSlicer/OrcaSlicer/releases/latest)** Visit our GitHub Releases page for the latest stable version of OrcaSlicer, recommended for most users. ## Nightly Builds 🌙 **[Download the Latest Nightly Build](https://github.com/OrcaSlicer/OrcaSlicer/releases/tag/nightly-builds)** Explore the latest developments in OrcaSlicer with our nightly builds. Feedback on these versions is highly appreciated. ### Belt Printer Builds The [nightly release](https://github.com/OrcaSlicer/OrcaSlicer/releases/tag/nightly-builds) 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** — `_belt` suffix (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 `_belt` builds, produced from the [`belt-printer`](https://github.com/OrcaSlicer/OrcaSlicer/tree/belt-printer) branch. See tracking PR [#14394](https://github.com/OrcaSlicer/OrcaSlicer/pull/14394) and the original documentation in [#12998](https://github.com/OrcaSlicer/OrcaSlicer/pull/12998). # How to install ## Windows Download the **Windows Installer exe** for your preferred version from the [releases page](https://github.com/OrcaSlicer/OrcaSlicer/releases). Both `x64` and `arm64` installers are published — pick the one matching your CPU. - *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](https://github.com/OrcaSlicer/OrcaSlicer/releases/download/v1.0.10-sf2/MicrosoftEdgeWebView2RuntimeInstallerX64.exe) - [Details of this runtime](https://aka.ms/webview2) - [Alternative Download Link Hosted by Microsoft](https://go.microsoft.com/fwlink/p/?LinkId=2124703) - [vcredist2019_x64](https://github.com/OrcaSlicer/OrcaSlicer/releases/download/v1.0.10-sf2/vcredist2019_x64.exe) - [Alternative Download Link Hosted by Microsoft](https://aka.ms/vs/17/release/vc_redist.x64.exe) - 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 ```shell winget install --id=SoftFever.OrcaSlicer -e ``` ## Mac 1. Download the universal DMG, which runs on both Apple Silicon and Intel Macs. 2. Drag OrcaSlicer.app to Application folder. 3. *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: ```shell xattr -dr com.apple.quarantine /Applications/OrcaSlicer.app ``` - Option 3: - Step 1: open the app, a warning window will pop up ![mac_cant_open](./SoftFever_doc/mac_cant_open.png) - Step 2: in `System Settings` -> `Privacy & Security`, click `Open Anyway`: ![mac_security_setting](./SoftFever_doc/mac_security_setting.png)

### Homebrew Cask ```shell brew install --cask orcaslicer ``` The [Homebrew cask](https://formulae.brew.sh/cask/orcaslicer) installs the official macOS DMG from [GitHub Releases](https://github.com/OrcaSlicer/OrcaSlicer/releases). ## Linux ### Flathub (Recommended) OrcaSlicer is available through FlatHub:

Download on Flathub

Install from the command line: ```shell 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`). 1. Download App image from the [releases page](https://github.com/OrcaSlicer/OrcaSlicer/releases). 2. Double click the downloaded file to run it. 3. 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](https://www.orcaslicer.com/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. ```gcode # 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

QIDI

BIGTREE TECH

## Backers: **Ko-fi supporters** ☕: [Backers list](https://github.com/user-attachments/files/16147016/Supporters_638561417699952499.csv) ## Support the project

## Some Background Open-source slicing has always been built on a tradition of collaboration and attribution. [Slic3r](https://github.com/Slic3r/Slic3r), created by Alessandro Ranellucci and the RepRap community, laid the foundation. [PrusaSlicer](https://github.com/prusa3d/PrusaSlicer) by Prusa Research built on Slic3r and acknowledged that heritage. [Bambu Studio](https://github.com/bambulab/BambuStudio) in turn forked from PrusaSlicer, and [SuperSlicer](https://github.com/supermerill/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](https://github.com/jal-co). # 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.