Alright, I have been thinking about this for a while. Most of us simple can
not afford a laser scan and CNC setup to scan a part and then just tell the
machine to make one.

How about some type of stylus setup for duplicating a part? A stylus tied
in in parrallel with the cutting point on the a mill which allows you to
trace over a part will cutting a piece of stock? Does it exist? Is it
practical? Maybe just for rough pieces?