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Gemstones, Minerals & Fossils
Lapidary
Diamond sintered laps.
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<blockquote data-quote="rough2cut" data-source="post: 244087" data-attributes="member: 3816"><p>The sintered disc is soft bronze so rotating or sharp corners introduced to the lap can scratch more like a micro gouge.This does lead to a scratchy finish and will then need a redressing to restore the lap. you can use a harder sintering metal like a cobalt bearing powder. But the harder the lap the courser the finish for the same grit.</p><p>I make a copper version of the sintered diamond lap to give a very smooth finish but it scratches easier than bronze.. I am working on a dual alloy lap in the same grit one hard one soft to give a fast cut with a fine finish. Thanks for the good review Gallic Prospector. Thanks Magoo for wanting to know stuff instaed of just jumping in.</p></blockquote><p></p>
[QUOTE="rough2cut, post: 244087, member: 3816"] The sintered disc is soft bronze so rotating or sharp corners introduced to the lap can scratch more like a micro gouge.This does lead to a scratchy finish and will then need a redressing to restore the lap. you can use a harder sintering metal like a cobalt bearing powder. But the harder the lap the courser the finish for the same grit. I make a copper version of the sintered diamond lap to give a very smooth finish but it scratches easier than bronze.. I am working on a dual alloy lap in the same grit one hard one soft to give a fast cut with a fine finish. Thanks for the good review Gallic Prospector. Thanks Magoo for wanting to know stuff instaed of just jumping in. [/QUOTE]
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Gemstones, Minerals & Fossils
Lapidary
Diamond sintered laps.
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