I'm tring to post a sample but I'm lost in Autocad right now. Sorry, the name is 3DGEAR.Zip (not plural) which contains the lisp program. It can be found at http://www.cadtoolsonline.com/free.htm
The drawing contains a gear with a center circle that I drew. It is 2D while the gear is 3D. Is there a extrude-cut command like I got used to in the Alibre demo?
Thanks,
Steve