Hi Guys.. I just stumbled on the shareware program MITCalc for Solidworks. If you don't know, it integrates as a add-in to Excel, and you enter in all your info and click the 3-d button and it'll generate the model for you. I was wondering if anyone here used it and what they thought of it. It'll generate simple models of belt drives, gears, and bearings, but what I think I'll like is the spring generation. Anyways, I was looking for user feedback on it. It looks like it's been around for a while, so I'm probably out of the loop on it and have missed it all these years... Scott PS:it's available at [URL]http://www.mitcalc.com/en/download.htm[/URL]