Ok, here's the problem. The wheel file is drawn in cm. But there is no cm upload option. So you have to scale it up by 10 and upload as mm. I can do it for you or teach you how to do it. Download Meshlab (free), click filters, Normals Curvatures and Orientations, Transform: Scale, Type 10 for all 3 axis and click apply and close. Now click file, export Mesh as. Change the file type to stl and save it as a different name than the original. And you should get this. If you need me to do the other 3 let me know, but I'd like to give you the opportunity to learn if you want.
Last edited: Jan 27, 2012