Quote:
Originally Posted by twoton
So the're better than the HF ones that last for 5 minutes.. 
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Don't know anything about the discs that began this thread. I'll just comment that I almost got hurt badly when a cheap grinding disc disintegrated once. I won't buy stuff like that that isn't name brand, don't trust it. Klingspor, Merit, 3M, Sait, etc. to be honest, our local welding supply shop is pretty reasonable on the good stuff. Save the lectures on how to grind, that was one of my first jobs, grinding welds for on parts to be sent for show chrome plating.