Brent Philion wrote:
I'm looking to buy a 4 jaw chuck for my lathe.
I have a 10" lathe (Atlas 10X36) and an 8" 3 jaw chuck already

I'm Looking to add a 4 jaw and i'm wondering if there are advantages to
using a bigger chuck over a small one other than the Obvious of being
able to chuck up bigger work. and the Obvious Disadvantage in price.

Assuming i dont need to put anything over 6" in the chuck are there
other advantages to having a bigger chuck over a little one?

And anyone selling a 4 jaw that fits a 1 1/2" x 8 TPI threaded spindle?

A 9" lathe uses a 6" 4-jaw and a 5" 3-jaw. Presumably you could go as large as
7" on a 4-jaw. Have to be careful of projecting jaws hitting you or the ways or
the apron. Other drawback to larger chucks is the weight, although a 7" chuck
won't strain you too bad.

Be careful buying used 4-jaws, if the jaws are bell-mouthed you'll have a lot of
trouble. I suggest the PC brand from ipstool.com, they seem like some crappy
import but I have one of their 3-jaws, use it a lot, *much* better than my
original chuck that came (in 1949) with my lathe. They are reasonably priced, too.

GWE