Slic3r
3D printing software
- Features
- Ease of use
- Ease of management
- Quality of support
- Affordability
- Market presence
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What is Slic3r
Slic3r is an open-source 3D printing slicer that converts 3D models (commonly STL/OBJ/AMF) into G-code for fused filament fabrication (FFF/FDM) printers. It is used by makers, engineers, and print operators to generate toolpaths and configure print parameters such as layer height, infill, supports, and speeds. The product is known for a configurable, profile-driven workflow and for serving as a base for multiple downstream forks and integrations in the desktop 3D printing ecosystem.
Open-source and extensible
Slic3r is distributed as open-source software, which allows organizations and individuals to inspect, modify, and redistribute the code. This supports customization for specific printers, materials, or workflows without relying on a single vendor’s roadmap. It also enables community-driven fixes and feature additions and has historically influenced other slicer implementations.
Advanced slicing controls
The software exposes a wide range of slicing parameters, including perimeters, infill patterns, support generation, and cooling/speed controls. This level of configurability can help experienced users tune prints for strength, surface finish, or print time. It also supports profile-based settings, which helps manage different printers and materials.
Broad printer compatibility
Slic3r outputs standard G-code and is commonly used with many RepRap-style and other FFF/FDM printers. This makes it suitable for heterogeneous printer fleets where a vendor-specific slicer is not ideal. It can be integrated into toolchains that rely on file-based handoff rather than cloud-managed printing.
Less polished user experience
Compared with some modern slicers, the user interface and onboarding can feel less guided for new users. Many settings are exposed with limited guardrails, which increases the learning curve. Teams may need internal documentation and standardized profiles to ensure consistent results.
Project maintenance uncertainty
The original Slic3r project has had periods of reduced activity compared with more actively maintained slicers. This can affect the availability of timely bug fixes, new printer profiles, and support for newer firmware features. Organizations may need to evaluate whether a maintained fork or alternative is required for long-term use.
Limited enterprise workflow features
Slic3r primarily focuses on slicing and G-code generation rather than fleet management, user administration, or centralized job tracking. It does not natively provide the kind of cloud collaboration, queueing, or audit controls that some print management platforms offer. For multi-user production environments, additional tooling is often required.
Plan & Pricing
| Plan | Price | Key features & notes |
|---|---|---|
| Free (Open-source) | Free | Licensed under GNU AGPLv3; official installers available for Windows, macOS and Linux; source code and development builds available on the project's GitHub; no paid tiers or enterprise plans listed on the official site. |
