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Gemstones, Minerals & Fossils
Lapidary
Best faceting prepolish lap
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<blockquote data-quote="fossickeract" data-source="post: 115585" data-attributes="member: 3672"><p>Hi rough2cut,</p><p> This topic is a bit like poking a bull ants nest with a stick as I would send anyone selling the multitude of imported laps broke. Any material harder than quartz I use 8000 on a ceramic lap to prepolish and then 100,000 on type metal to polish. That's it. What is worse, I only use two solid copper laps 325 and 1200 and over the years as diamond is added they improve no need to buy new ones! Softer stones such as Apatite I have just left out the ceramic. Of course the ceramic lap has to be mastered but does a great job when it is.</p><p> Unfortunately this approach is considered old hat not much profit in it for lap sellers.I learned from a world ranked competition cutter and it worked for him. Commercial cutting where time is the issue is a whole different game no doubt.</p><p> <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /> Ted</p></blockquote><p></p>
[QUOTE="fossickeract, post: 115585, member: 3672"] Hi rough2cut, This topic is a bit like poking a bull ants nest with a stick as I would send anyone selling the multitude of imported laps broke. Any material harder than quartz I use 8000 on a ceramic lap to prepolish and then 100,000 on type metal to polish. That's it. What is worse, I only use two solid copper laps 325 and 1200 and over the years as diamond is added they improve no need to buy new ones! Softer stones such as Apatite I have just left out the ceramic. Of course the ceramic lap has to be mastered but does a great job when it is. Unfortunately this approach is considered old hat not much profit in it for lap sellers.I learned from a world ranked competition cutter and it worked for him. Commercial cutting where time is the issue is a whole different game no doubt. ;) Ted [/QUOTE]
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Gemstones, Minerals & Fossils
Lapidary
Best faceting prepolish lap
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