On 5/19/2013 11:27 AM, Ignoramus17710 wrote:
I am trying to finish up some unfinished business with my Clausing
6913 lathe. This is my question #2. I have a three jaw chuck on it,
and while the outside of the chuck is relatively true (as seen with a
dial indicator), the parts held in the chuck run anything but
true. From previous discussions and my searches, I could try to
regrind or re-cut the jaws, right? And if so, which way is better? Can
I do it with a carbide insert and auto feed?

i


20 years ago I trued the jaws in my 3-jaw chuck for my Reed-Prentice. I
closed the chuck on a spider behind the jaws and used an air die grinder
with a 2" long x 1" diameter stone mounted on the tool post. I took
tiny-tiny cuts. The jaws are square and hold .002" easily. And, I
haven't had to do it again. Also, I always do the final tightening on
one key hole that happens to be the one CCW from the label. One hole
will ALWAYS be the "ONE" on any chuck.