A grinder is a machine used for shaping, roughening, smoothing or precision machining of many different materials. Grinding is accomplished by removing small particles from the surface of the material.

The grinding machine can be used to process various materials. These include materials such as metal, glass, ceramics, stone and plastic. The angle grinder performs various operations using different grinding wheels or blades. These wheels or blades are selected according to the hardness of the material and the requirements of the surface to be treated. For example, operations such as removing burrs, smoothing rough surfaces, precise shaping of parts with open tolerances or creating sharp edges can be performed with a grinding machine.