I am thinking about making a combination hammer eye punch/drift. Why a combination? I do not want to make two tools to make a tool. The tool I am after is a handled slot punch, suitable for many things, including making hammer eyes. So in essence the "punch" portion of this drift only has to function a couple times. Now, the directions I find for a hammer eye drift seems to be: 1) start with round, about 1 inch. 2) shoulder to form a hand grip, or taper back to allow a dressable area for