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11-13-2008, 02:22 AM
Thread: Lapping--what's flat??
by Ben325e- Replies
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I have a granite reference plate, grade a...
I have a granite reference plate, grade a quality, with a certificate of flatness. over a 1 foot length, it's flat to within +/- 1.05 microns. Just as a comparison, the shapton lapping plate is...
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