Review on Rocaris Aluminum Grinding Abrasive Polishing by Paul Bijeaux

Wood has been processed on a grinding wheel. The job, which involved grinding the edge of a very thin sheet of metal with the point of a stone, took about 20 minutes. The tin made a groove in the stone and because of the limited space I couldn't move to another spot on the whetstone. The work would require at least 2 and maybe 3 more stones. Found this pack of 20 for a good price. 3 stones used to complete the job. I have 17 good stones and 3 fine grooved stones left for any future work. I thought it would be a lot. I especially like the square ends on the shank which keep the stones from spinning in the drill chuck.