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Slic3r

slic3r.org

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Spec score 7.7 #25 of 35 in 3D Printing Software

Spec sheet

Purpose
Slic3r converts 3D models into printer instructions by slicing models into layers, generating toolpaths, and calculating extrusion amounts.Read 9 Oct 2026 · slic3r.org
Audience
The project says Slic3r is mostly used by advanced users, while novice users often need only a few configuration options.Read 9 Oct 2026 · slic3r.org
Support
The project directs users to GitHub discussions and its IRC channel for community participation and support.Read 9 Oct 2026 · slic3r.org
License
Slic3r is licensed under the GNU Affero General Public License version 3.Read 9 Oct 2026 · slic3r.org
Founded
2011Read 28 Sep 2026 · slic3r.org
Advanced features
Features include multiple extruders, variable layer heights, sequential printing, honeycomb infill, mesh cutting, modifiers, and automatic support generation.Read 9 Oct 2026 · slic3r.org
Command line
The command-line tool supports batch G-code generation, SVG slice export, model cutting, transformation, repair, and format conversion.Read 9 Oct 2026 · slic3r.org
Downloads
The download page offers precompiled official and development packages for macOS, Windows, and Linux; Linux users need the freeglut package.Read 9 Oct 2026 · slic3r.org
Integration
Slic3r can send jobs to OctoPrint.Read 9 Oct 2026 · slic3r.org
Library
Libslic3r is a C++ library with reusable components and a granular API for building applications on Slic3r algorithms.Read 9 Oct 2026 · slic3r.org
Machine compatibility
The project says it supports known G-code dialects including Marlin, Repetier, Mach3, LinuxCNC, Machinekit, Smoothie, Makerware, and Sailfish.Read 9 Oct 2026 · slic3r.org
Model formats
It supports conversion between STL, OBJ, AMF, and POV formats and can export SVG slices.Read 9 Oct 2026 · slic3r.org
Origin
The Slic3r project began in 2011 within the RepRap community and describes itself as a non-profit, independent community project.Read 9 Oct 2026 · slic3r.org
Printer control
A built-in USB/serial host controller supports multiple simultaneous printers, each with a spool queue.Read 9 Oct 2026 · slic3r.org
Printer types
It generates G-code for FFF/FDM printers and includes a built-in projector and host for DLP printers.Read 9 Oct 2026 · slic3r.org

Plans and prices

Slic3r Free Free software · macOS, Windows, Linux Read 9 Oct 2026 · slic3r.org

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