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01-17-2017, 01:31 PM #10
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- Nov 2016
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The two questions that need to be answered are:
1. "How straight is straight for the razor edge?"
2. "How flat is flat for the surface of the stone?"
We are trying to generate a razor edge that is uniform at the submicron level. A DMT Diaflat lapping plate is certified to be flat to +/-0.0005". While that seems impressive, 0.0005" (1/2 mil) is 12.5 microns. We are unlikely to get our stones much flatter than that.
Thus, to create a uniform edge on a razor that is not quite straight using a stone that is not quite flat, we need to use a combination of circles, straight strokes, and x-strokes. Another thing that I do is to rotate the stone 180 degrees mid-way through the honing on each stone to help compensate for variations in the flatness of the stone side to side.