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Thread: Lapping Problems
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02-24-2013, 04:27 AM #1Junior Member
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Lapping Problems
Today I was using a DMT 220/325 plate to lap a Japanese 6000 grit stone that I have had for a while, but never used. After about ten minutes, I started to notice rough patches on the stone. Now the entire surface of the stone is covered in pits, and bits of stone came off when I rubbed it with my finger. Is the stone faulty, or did I do something wrong? Should I just keep going and hope that it gets better farther down? I have never had any problems lapping my Nortons, but I am new to all this and could use some advice.
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02-24-2013, 05:02 AM #2The Great & Powerful Oz
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Is it a ceramic stone like the Nanaiwa & Shaptons. They are a more sensitive to external stimuli, ie excess heat, cold, water, detergents & so on.
“The white gleam of swords, not the black ink of books, clears doubts and uncertainties and bleak outlooks.”
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02-24-2013, 05:25 AM #3Junior Member
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No, it is not ceramic, I think it is just an artificial water stone.
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02-24-2013, 05:31 AM #4The Great & Powerful Oz
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Then you may have a warranty claim if it is new & you cannot lap past these areas easily. Waterstones should not crumble from lapping.
“The white gleam of swords, not the black ink of books, clears doubts and uncertainties and bleak outlooks.”
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