Posted by Chewie [166.181.82.112] on Wednesday, August 05, 2015 at 11:03:08 :
In Reply to: Drill Bits OT posted by The Dodge Boys [173.49.177.213] on Wednesday, August 05, 2015 at 10:39:35 :
Low RPM, lots of tool pressure. Heat kills the tip. Then the edge goes fast. Just about any oil will work, but cutting/tap fluid is the best. The oil dissipates the heat, so a steady flow is best.
That's my experience..
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