Sharpening is performed on any product requiring a sharp edge or point. It is the process of creating or refining a sharp edge on an implement or tool designed for cutting. Sharpening is done by grinding away with an abrasive substance harder than the material of the implement. This is followed by processes to polish the sharp surface to increase smoothness and to correct small mechanical deformations without regrinding. Sharpening stones are used to sharpen tools, dies, household objects and molds to provide top performance and productivity.