Drilling holes;

I had a bunch of holes to drill. 3/4 inch - .001 over - with location within a few thousands in 1/8 thick cold rolled steel. To my surprise I found a 3/4 center drill [ unaltered ] could be ran all the way through the stock , getting just what I wanted. doing it in my vertical mill it was much faster then I thought possible. It took awhile to get the knack of slowing down the spindle as the hole got bigger. Richard