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From: "Jim Wilkins" <muratlanne@gmail.com>
Newsgroups: rec.crafts.metalworking
Subject: Re: Those Cheap Diamond Inserts
Date: Tue, 20 Aug 2024 17:56:10 -0400
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"Bob La Londe"  wrote in message news:va2mum$3fqc7$1@dont-email.me...

That's true, but I did run across a reference (Stefan Gotteswinter video
maybe) to an actual diamond attached to a tool.  There are also coatings
that are called diamond, although most are actually DLC "diamond like
coatings."
Bob La Londe

-----------------------------------

I've watched an optical lathe turn a Germanium lens for a military vehicle 
thermal imager with a clear single crystal diamond bit with the geometry of 
brazed carbide. It may have been synthetic, the laser diodes I had for the 
inter-satellite communications project were mounted on thin sheets of 
artificial diamond on a gold-plated copper heatsink. Diamond is an excellent 
conductor of heat but an electrical insulator.