I have attempted importing a TurbCAD drawing, saved as a 3ds, opj and dxf into Blender 2.57.0 with no success. I understand that MoI will work, but I am looking for a free solution at the moment. There was a post that ended in December with some talk of using Blender to solve the issue of organic shapes, MoI being the prefered. I can import simple shapes. At some point in my drawing progression, Blender, or the TurboCAD conversion makes it unreadable in Blender.