What did you do with your truck today, Part 3

[mick53]

I think I'm ready to try again. One of the problems I had with the 4 jaw chuck was getting it tight enough to suit me without deforming it. I went back to the 3 jaw because it lines up with the spokes (6) in the pulley. I also made this thing to hold it against the chuck for piece of mind. I figure if it slips it might not destroy itself and me. I also made a new and improved tool. Nothing left but the doing. I have .004" runout.