DME University



Stones are manufactured “sticks”. Aluminum oxide and silicone carbide are the abrasive particles used. They are used in the final finishing phase of polishing. Stones are square, rectangular, or round. Sizes range from 1/4″ x 1/8″ to 1 square inch, but all are 6 inches long. Grits range from 120, very coarse, to 1200, very fine. Coarse stones (120 to 400) are for removing cutter marks and benching marks. Finer stones are used to refine the finish and to prepare for diamond finishing. Stones are used with a profiler and by hand for a draw stone finish. Stones should be used with a lubricant such as mineral spirits to prevent “loading up”.



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