Although drilling individual holes, usually as a gang setup, but due to 
spacing, probably needs a transfer table to increment for the holes 
between the minimum gang hole spacing, or a NC to drill individual holes 
(or gangs) is much more time consuming, and the initial cost of the 
equipment and maintenance including drill bits is not inexpensive. The 
gang punching of all holes at once does have an equipment and tooling 
cost including replacement punches and die plates which I wouldn't call 
near zero either. I wouldn't want to guess which is least expensive, 
might be dependent on equipment available from other jobs. :)


>   So the drilling cost is virtually zero.
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