Subject: Re: drill bits

From: [email-masked] (Clay Spencer)
Date: Wed, 7 Aug 1996 23:25:52 -0400

At 3:52 PM 8/7/96, [email-masked] wrote:
You can learn to sharpen your bits. The hard part is getting the angles
equal and lengths of the lips equal.
Make a sheet metal gage to measure the 59 degrees and mark the edge is 16th
of inches. Estimate to 32nds or closer. Usually if you get the angles equal
the lips will be close. Grind a little off each side and check with the
gage. Keep on until you get it right.
Clay

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From: [email-masked]
Date: Thu, 08 Aug 1996 10:57:45 -0700

My machinist uncle told me the best way to check angle and if the two
flutes were even, was to hold two hex nuts together on edge.  The angle
formed is very close, (close enough) and you can readily see if they are
equal by putting the freshly ground tip of the bit into the joint between 
the nuts.
  bob