For my engineering class for our first machining project we are making a C clamp out of 6061 aluminum. Steel eventually but aluminum to start. ANd for the first time i machined something entirely from scratch, the screw for the clamp. From a 1/2 piece of stock aluminum i made the screw . Using the lathe i cut shaved off the shaft to .375" leaving one 1/2 " section where it is knurled to just under .5". I will get pictures of hte final project as soon as i mill out the body.