Quote Originally Posted by mklotz View Post
Mounting a square collet block in the 4jaw or a hexagonal collet block in the 3jaw allows you to use collets without removing whatever chuck is mounted on the lathe.

This can be particularly handy when the work sequence demands going back and forth between the mill and the lathe.
Marv, in order to remove/change the stock when using collet blocks you have to remove the collet block at least on the 5C collet block I just received. Mounting the 3 jaw chuck in the 4 jaw avoids this problem.

Possible you know of some other collet blocks?

Ralph