also we each made a tiny alum arbor press, cut gears rack and pinion It was a nut cracker after 1979 til now I still have it, made v blocks 123 blocks. lucky me I was in the grinder section when they were ready to grind and I had the "fun" of grinding all the classes blocks to + - .0001 and square to within .0002 square. boy did I sweat that out. I didn' want to ruin any of my fellow classmates or teachers items. It was fun. also a deep hole extention. when I started training apprentices at work I dug Up the threading project and have required all the apprentices do the same thing. nuts and all. 2 apprenti made their project into a desk lamp. bill