Specially Designed Flap Disc for Grinding Aluminum. These flap discs contain a calcium stearate coating that liquefies under heat to keep the disc cooler and to prevent loading on soft materials such as aluminum, bronze and copper.
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Posted by David on 12th Jan 2017
Compared to what I found locally, I find it make quick work at grinding down the welded joins on Aluminum, but it uses up a little quicker than the other brand. How little? normally we can grind down 11 frames and with this disc we get about 9-1/2 to 10 frames. But the savings is well worth it.