diamond impregnated brazing rods uk

[komatias]

For a try at making some of these :) I have a couple that where in a shed clearance (somewhere).. on eBay. And I PM'd the seller and he said his dad probably got them from the US site. But I have seen people use 2 part epoxy mixed with diamond powder for the size of spheres I'm attempting.



I'm intrigued at the method they use for these LINK

My first reaction to the video was..."Like f*** is that diamond impregnated". Cherry red colour on steel is in excess of 700C. Diamond turns to graphite at 600 odd.

Has the chappy found some way of protecting the diamond I wonder? Will look for his patent.