What kind of grinding wheel should I look at first? Red? Hey? The method of grinding the red grinding wheel can be used in the general hardware store of Shi Hu. Specializing in red grinding wheel can't repair cymbal grinding wheel! ! The grinding method of dysprosium grinding wheel is: smooth it with a gold pen. In addition, the reason for the vibration is that the grinder has no damping function. Usually, there is a rubber pad under the grinder. Not in the end. The dynamic balance of grinding wheel should be reconfirmed.