--Well there used to be a couple of them. One I recall
consisted of nothing more than a tool rack that was bolted to one end
of the mill table; program a move to the rack, drop a tool and pick up
another. It presupposes that you've got something like a pneumatic or
electric tightener/untightener for the drawbar. These are available,
too, of course.

--
"Steamboat Ed" Haas : For some reason hung up on
Hacking the Trailing Edge! : Mexican Oompah bands...
http://www.nmpproducts.com/intro.htm
---Decks a-wash in a sea of words---