Rozaŭtuno@lemmy.blahaj.zone to

Curated Tumblr@sh.itjust.worksEnglish · 2 years ago

synthetic gems

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synthetic gems

lemmy.blahaj.zone

Rozaŭtuno@lemmy.blahaj.zone to

Curated Tumblr@sh.itjust.worksEnglish · 2 years ago

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JohnDClay@sh.itjust.works
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2 years ago
Maybe they mean ruby infused grinding wheels?

https://www.travers.com/product/radiac-ruby-surface-grinding-wheels-71150

Or maybe they were exaggerating a little bit and thinking about ruby bearings.

https://www.renishaw.com/shop/Product.aspx?Product=A-5000-3611

Curated Tumblr@sh.itjust.works

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