I have a lathe that I just replaced the bearing, seals, rebuilt the apron, etc. I tried to align the head, but I can not get better than .005 runout. I'm using a piece of 1.5" Thompson shaft, I am not using the tail stock. I think my problem is in my chuck, I have shimmed, moved the head forward and back and all I seem to be doing is chasing the problem. I faced the old backplate and that did help abit. I ordered a backplate for a new chuck that I have, but I am afraid to machine it. I don't know if I have the head aligned or not. I don't know what step I should take next. |