Posted by Paul from MI on December 30, 2009 at 04:41:01 from (204.106.244.65):
In Reply to: Drill Bits posted by Plumcrazy on December 30, 2009 at 03:04:11:
Others have said it, but speed is very important. Also using a drill press where possible will help because the drill/work is not jumping around, and your holes will be straighter. When drilling larger holes start small and go up in steps. You have to keep the bit cutting, not just rubbing. If allowed to rub with out cutting it will dull quickly. Buy the best made in the USA high speed or cobalt bits, then sharpen them correctly and you'll be fine. The website below will give you an idea of speed, remember the speeds shown are maximum, slower will keep your bit sharp longer. Good luck, Paul, Journeyman Tool & Die Maker for 40 years
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