Diamond grinding wheels, diamond grinding cup wheels, diamond shaping wheels, brazed diamond cup wheels, Resin filled diamond cup wheels..no matter what the name the purpose is the same, the grinding, shaping, flattening, or smoothing of granite, marble, porcelain, concrete, and other natural or man-made materials. The diamond tool store offers a full line of diamond grinding and shaping wheels for many applications. These grinding wheels come in many different sizes. remember to avoid excessive feeds. Every grinding operation is different. What is an excessive removal rate on one operation may be acceptable on another. Excessive feed on a given operation will cause premature wheel wear. Excessively high feed rates are characterized by a harsh grinding sound, chatter, burn, high sheer wear rate, vibration.