This project provides a command-line utility to convert STL files to STEP (ISO 10303-21) files. The translation is a direct triangle-to-triangle conversion with tolerance-based merging of edges. The stltostp tool translates without depending on third-party tools such as OpenCascade or FreeCAD.
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Ballistyxx/stl-to-step/main/install.sh)"Currently a work in progress! For Windows systems, you can use WSL and the Linux/MacOS command to build the program.
✔ Converts ASCII and binary STL files to STEP files
✔ Merges edges based on a specified tolerance
✔ Outputs STEP files compliant with ISO 10303-21
✔ Simple command-line interface
✔ No dependencies on external libraries
- Standard PC with a C++11 compatible compiler
- CMake 3.10 or higher
The project is implemented in C++ and uses CMake for build configuration. The software includes:
- Command-line interface for easy usage
- Tolerance-based edge merging for accurate conversions
- Support for both ASCII and binary STL files
stltostp <input_file.stl> <output_file.stp> [tolerance]All source code and build files for the project are provided in the repository.
📂 Download Here: GitHub Repository
🛠️ Installation: Clone this repository and follow the build instructions provided in the Installation section.
⚠ Limited Error Handling – Improve error handling for edge cases. ⚠ Performance Optimization – Optimize the conversion process for large STL files. ⚠ Additional File Formats – Add support for other 3D file formats in future updates.
This project is open-source under the MIT License. See the LICENSE file for details.
Developed by w3gen, installer streamlining by Eli Ferrara
📧 Contact: GitHub Issues
✨ If you like this project, consider giving it a ⭐ on GitHub!