Hi Colin,

I have had similar success by importing STL files into TurboCAD Professional and saving them as IGES files. I then pull them into MoI, and depending on how you bring it in as IGES settings, I have had them come in as solids as well as individual surfaces. The only issues I usually have with doing this is scaling issues.

Do you have any tips on freeware that can convert OBJ files to STL files? I can't remember if Blender can do this or not.

Let me know.

Thanks,

Michael T.