I have several hundred 17/32" holes to drill into some A36 1/4" to 1/2" steel plates with a bridgeport clone. Normally I centerdrill first, followed by a 1/4" drill to clear the web of the larger drill and finally the larger drill(118*). If I do this, I will be here until Christmas. Would it be practical to drill with a 135* split point without centerdrilling first? Would a good quality HSS (or cobalt) drill survive 500 holes without sharpening (I can't sharpen split points)? Any recommendations would be appreciated.