Grinding is a machining method that removes material. It refers to the process of removing excess material from a workpiece with an abrasive, an abrasive tool. Grinding is one of the more widely used methods of material removal. Grinding, in the mechanical processing under the finishing process, processing less, high precision.

When operators commence CNC machining of parts, they must set the feed rate to a very low level and execute one step at a time. They must remain fully focused during rapid positioning, tool retraction and feed-in; their hand should rest on the stop button so that they can halt the machine immediately if any problems arise. They must carefully observe the direction of tool movement to ensure safe feed-in, and then