I had an eye opener when I was setting up my new HF 8x12 Lathe. I lined up the chuck and tail stock with dead centers and only had to adjust the tail stock just a little bit horizontally and felt pretty good about that. Well I chuck up a piece of steel and trimmed it down and then flipped it around and chucked it up and WOW it is .007 out of round. So I started checking and the spindle is about .001 minus out, and the chuck body is another .003 plus out, so I loosen the chuck back bolts and worked the high spot and re-tightened and now down to .002 minus. BUT when I tighten the 3 jaw chuck on a true round piece like a 1/2 inch drill bit, it can vary from .002 to .007 out of round. I though maybe one jaw was high, but after chucking a 1 1/2 , 1/2 and 1/4 true round objects, that there was no consistent jaw that was high.
Do I need to debur the teeth of the jaws and the worm gears ?
Do I need to use a tightening method like torquing a head, slowly round and round (since there are only 3 places to insert the chuck wrench) ?
Do I need to use a dial indicator and tighten opposite or same side ?
Thanks
Do I need to debur the teeth of the jaws and the worm gears ?
Do I need to use a tightening method like torquing a head, slowly round and round (since there are only 3 places to insert the chuck wrench) ?
Do I need to use a dial indicator and tighten opposite or same side ?
Thanks