burtwitlin wrote:

Tom,

Try a thin metal shim alongside the loose machine jaw. If you go to
Harbor Freight and buy a cheap set of flat feeler gauges you will have
a complete set of shims that will last the rest of your life. You
might also try to make a shim from an aluminum beer can, empty of
course.


Just don't empty too many before you start working on the chuck.
Interesting things happen when you do that. ;-)

Deb