The drawbar that came with my mill is a piece of junk. the 7/16" thread was cut so poorly I don't think I could have copied the quality it if i tried to. It doesn't thread into an arbor smoothly & the whole draw bar wobbles bad. The metric thread on top was so loose, makes me wonder if I could thread a SAE nut on it! It works but I wanted to make a replacement for it. Nothing complicated but here's how I made it.