Being one of the metal processing methods, grinding is a type of method of surface improvement. It is considered to be in the production category as it causes a little sawdust.   
The cutting stones obtained through the hard-stones’ being kiln-dried with various fastening elements are whirled at a high speed at the grinding counter and the surface of the metal is gently processed and then the surface is improved through the sawdust at the low depths.    
There are 3 well-known grinding methods: