How to select the grinding wheel?

Grinding wheel

Rough grinding lathe tool should be selected the grinding wheel with smaller abrasive grains, on the contrary, fine grinding lathe tool should be selected the grinding wheel with bigger abrasive grains. When sharpening lathe tool of HHS, it should be used the granularity between 46 and 60, or soft aluminum oxide grinding wheel. When sharpening carbide-tipped lathe tool, it should be used the granularity between 60 and 80, or soft Sic grinding wheel. Tips: Do not confuse the two different grinding wheels.