Sure enough, the aluminum hardly puts up a fight. With the aluminum securely between the two pieces of the clamping form, Stone used several different sized soft hammers and mallets (such as rawhide, rubber, or copper) and several different wood or phenolic dollies to shape the aluminum. Stone doesn’t use a body hammer, which is hard and would mark up the metal. He worked slowly, moving from the top of the radius down, keeping it tight on the wooden form. By the time he finished, he’d made about 1,000 strikes.