This is a Blender add-on that allows importing and exporting 3MF files. 3D Manufacturing Format files (.3mf) are a file format for triangular meshes intended to serve as exchange format for 3D ...

Download Blender 2.49 and extract the zip into a folder. https://download.blender.org/release/Blender2.49/ Set the PythonPath Environment Variable to the install ...