Grinding or sanding Aluminum - American Welding Society
Grinding or sanding Aluminum. By Lawrence Date 05-18-2007 09:20. Right on Tommy. A chunk of parafin (about $1 per pound in the canning section of your local grocery) will save thousands of dollars in ball burrs. Just hit the parafin with the burr and grind, rehit the parafin every few moments and the thing will last 50 times longer than without ...