ORNLSlicer

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.

Project Rename

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/.

Features

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/ and resources/configs/
• Extensible architecture for new algorithms and exporters

Documentation

• 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

Support

• 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.

License

See LICENSE.md for core license terms. Additional licensing and citation guidance is available in:

• License and Library Licenses
• Citation and Copyright Information

Sponsors

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.

Contributors

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.

Contact

General inquiries: slicer@ornl.gov