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Gemstones, Minerals & Fossils
Lapidary
Looking for a pic pre 1970 4in1 Gemmasta
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<blockquote data-quote="Martyz" data-source="post: 624786" data-attributes="member: 14320"><p>Thanks Mike. I had to run off and check my pulley ratios to make sure nothing was going to self destruct.</p><p>For cutting and polishing I use a 1:1 ratio, so about 1425 rpm.</p><p>For slicing I sometimes like to drop to a smaller pulley on the machine which brings it to 1:1.25 or about 1780 rpm.</p><p>Ideally Id like to be able to drop the speed lower than 1425 rpm for polishing but I get the job done.</p></blockquote><p></p>
[QUOTE="Martyz, post: 624786, member: 14320"] Thanks Mike. I had to run off and check my pulley ratios to make sure nothing was going to self destruct. For cutting and polishing I use a 1:1 ratio, so about 1425 rpm. For slicing I sometimes like to drop to a smaller pulley on the machine which brings it to 1:1.25 or about 1780 rpm. Ideally Id like to be able to drop the speed lower than 1425 rpm for polishing but I get the job done. [/QUOTE]
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Gemstones, Minerals & Fossils
Lapidary
Looking for a pic pre 1970 4in1 Gemmasta
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