So, I have both a draw bar and collet chuck with collets for my Craftsman 12" lathe. I figured out the drawbar works with one size cutter, which I have, (see pic). I managed to thread the collet chuck onto the spindle and figured out that by turning the chuck body clockwise it comes off. I inserted a collet into the chuck, but for the life of me cannot get it to tighten down onto the cutter. I assumed turning it counter clockwise would tighten. Questions are, how does it tighten up? Do I need both? Would the drawbar be sufficient for simple milling? Or, do I want to have a pile of collets and a chuck in the toolbox?