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More about the images above: What a Stearate coating on top of an abrasive would look like. Notice the cascade look of the stearate. (Stearate coating) The grain does not fall onto the maker coated backer, but rather pulled from below into the resin. This locks the grain deeper into the resin coat making abrasive grain shedding less likely to occur. (Coated Abrasives) Our PS33 Stearate discs, grits 40-320, are NOT top coated with a stearate. Instead, the Stearate is mixed into t …