I prepped a 1" diameter stressproof bar for the crank shaft today by offset center drilling both ends. But I do not own a 4 jaw chuck. A 4 jaw is the only set up I have witnessed in use for offset turning. What sort of fixturing should I be looking to make for the driven (chuck) end of the stock using my 3 jaw? I know I saw some pictures of a nice fixture on here somewhere but of course now I can't find them. Any advice would be much appreciated.