save your model which should be converted to data/ python cli.py data/*input_filename.input_format* data/output_filename.output_foramt. example: python cli.py data/example.obj data/example.stl ...

stlto3mf is a command line tool written in Rust that merges multiple STL files representing a single object into a single 3MF file. This is especially useful for multi-material 3D printing, saving ...