I havent done it in awhile but I used to do these big stainless plates about .25" thick that had about 215 holes per plate. I did them on the nc but you still had to change the drill and tap after every plate.
What taps are you using?
I must have tried every tap out there and the one that worked (in stainless) the best was a standard uncoated 2 flute (aluminum style) tap. Go figure non of the engineers at these tap companies could make thier expensive high faluting taps work were a 2.00 dollar tap kicked butt!.
and oh ya! what Vipertx said!
thanks
Michael T.
"If you don't stand for something, chances are, you'll fall for anything!"