Just a brainstorming idea. Recently there was a thread on the mold=20 material for casting epoxy. Would this method be applicable. Castable=20 water clear materials are available. Just order the gears in an=20 inexpensive material and make clear copies. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .