ORNLSlicer is an open-source slicing and toolpath planning framework developed at Oak Ridge National Laboratory (ORNL) for additive manufacturing processes. It provides advanced algorithms for generating efficient, reliable toolpaths for technologies such as Fused Deposition Modeling (FDM) and Directed Energy Deposition (DED), with an emphasis on print quality, process optimization, and extensibility.
Slicer-2 is now ORNLSlicer.
This rename establishes 2.0.0 as the visible product baseline for the renamed product line. Repository links now target ORNLSlicer/ORNLSlicer, and the canonical documentation source now lives in docs/.
Core capabilities include:
- Multi-process toolpath generation for FDM, DED, and research workflows
- Advanced slicing and geometric processing algorithms
- Path optimization and modification utilities
- Configurable templates and settings system in
templates/andresources/configs/ - Extensible architecture for new algorithms and exporters
- Start here: Documentation Index
- Architecture map: ARCHITECTURE.md
- User guide: ORNLSlicer User Guide
- Developer onboarding: Getting Started
- Contributor workflow: Contributing
- Migrated wiki content: Legacy Wiki Content
- Report bugs or request enhancements: Issues
- View historical releases: Releases
- Review contributor expectations: docs/contributing
Before opening a new issue, please search existing issues to avoid duplicates.
See LICENSE.md for core license terms. Additional licensing and citation guidance is available in:
This work has been sponsored by work supported by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Office of Advanced Manufacturing, under contract number DE-AC05-00OR22725.
Development has benefited from numerous research partners and many interns whose efforts helped bring ORNLSlicer to its current state. Thanks to all contributors, past and present.
General inquiries: slicer@ornl.gov