I'm working on the version for 3D printing and I was wondering what file type you want me to give you. Since you mentioned Autodesk Inventor I looked up some of the file types it imports and I see it will import .iges and .step. Would you be interested in either of those formats, or is there another file format you prefer?
Let's try to do a (hopefully) universal file type that will be usable by the majority of 3D printer users. I did a test run on the Cameo of the HD antecubital detail and it looks like it will handle the minuscule parts so I've uploaded the .pdo files for ND, MD, and HD forearms and posted download links in their separate construction thread found in my signature.
I think when I build mine I'll not highlight the score lines with red/blue Cameo pens because their linewidth is slightly thicker than the score lines and it obscures the scoring on very small parts.