diamond impregnated brazing rods uk

[Fivetide]

Can't help but you got me intrigued. . . What you welding.?

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

[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.

[magicniner]

This appears to be data from reputable sources -

http://www.colorado.edu/physics/phys...62_Diamond.pdf

This suggests that diamond is OK to 800C - which might explain why diamond can be embedded in brass/bronze in a variety of applications and is commercially supplied in brazing rods.

- Nick

[cropwell]

I have a friend who is a glassblower. He has a couple of lathes with diamond impregnated brass wheels and I often wondered how they were made. So the answer is casting, but with careful temperature control.
Which begs the question - How do you true up a diamond grinding wheel ?

Rob

[magicniner]

Which begs the question - How do you true up a diamond grinding wheel ?

That's an excellent question, I have a diamond impregnated bronze grinding wheel which became a little rough in places after many years service, my solution was to swap it out for it's twin while I tried to find a solution, which I haven't yet found ;-)

- Nick

[Fivetide]

This appears to be data from reputable sources -

http://www.colorado.edu/physics/phys...62_Diamond.pdf

This suggests that diamond is OK to 800C - which might explain why diamond can be embedded in brass/bronze in a variety of applications and is commercially supplied in brazing rods.

- Nick

Theory is fine , but its like trying to fine hens teeth to get rough to polish grades , hence why I'm experimenting with epoxy . But for anything above a 5" sphere I doubt epoxy will be useful.
Never seen an article on truing the wheels but have seen people say if used correct they can last 10-15 years. At £150 a pop for a big one I'd want them to last a bit to lol :)


These guys produce the finished brazed cups in all sorts of grades and sizes

Big scale sphere making.. Highland Park grinding cups