John Woellner at Creative Edge did a fantastic job producing the CAD files we needed for our floor-cleaning robot. The parts fit together perfectly. To start, our company, FloorBotics, had a mock-up prototype made of pieces of plastic, cardboard, and balsa wood. John extracted the dimensions with our help and did all the CAD work. Along the way, he provided solutions to some tricky problems. He sent us the files for review via DropBox and we reviewed them locally using SolidView. After approval, he sent the files to a 3-D print shop and the parts were produced in nylon. It's a good material selection that combines rigidity with durability. I highly recommend Creative Edge Products.