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Gemstones, Minerals & Fossils
Lapidary
Polishing Troubleshoot
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<blockquote data-quote="rough2cut" data-source="post: 243560" data-attributes="member: 3816"><p>That happens when you out sourse your manufacturing to somewhere with lower standards. I have done a side by side with an American cutter who has a lap of mine and they are both very close in performance and finish. The difference is they claim a lot of things like ten times the concentration of diamond etc while mine is just a well made lap to Australian standards.</p><p>I don't like using anything over 800 for preforming as it scratches the bronze. The way to counter this is to increase the diamond concentration. It will give a courser finish but wont deteriorate the disc surface. I preform on my 800 but only after a 360 grit. It still scratches.</p></blockquote><p></p>
[QUOTE="rough2cut, post: 243560, member: 3816"] That happens when you out sourse your manufacturing to somewhere with lower standards. I have done a side by side with an American cutter who has a lap of mine and they are both very close in performance and finish. The difference is they claim a lot of things like ten times the concentration of diamond etc while mine is just a well made lap to Australian standards. I don't like using anything over 800 for preforming as it scratches the bronze. The way to counter this is to increase the diamond concentration. It will give a courser finish but wont deteriorate the disc surface. I preform on my 800 but only after a 360 grit. It still scratches. [/QUOTE]
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Gemstones, Minerals & Fossils
Lapidary
Polishing Troubleshoot
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