I buy female threaded inserts from McMaster-Carr. The male threaded pieces start out as a 3/4" long 1/4"X20 brass bolt I buy at a local hardware store. I cut the heads off and then drill a .140 hole all the way through them for the pick. The tips I machine from brass or aluminum rod or sometimes briar. The picks are made from .140" SS rod. I get all my rods online. The .140 rod is very hard to find but I like to use it so the pick will go through the airway of most shanks.ejames - where do you get the hardware for your tampers?