A Star Diamond Dresser is a specific type of grinding wheel dresser used in manufacturing to shape, sharpen, and true grinding wheels by using a series of free-running, serrated, star-shaped cutters or discs to expose fresh abrasive grains and remove debris. Unlike single-point dressers, the multi-point, self-sharpening design of a star dresser allows for efficient dressing of a larger wheel area and can result in a finer surface finish on the grinding wheel.