Milling is the process of cutting material from a work item by feeding it through a rotating cutter with several teeth. Having many teeth in the processing should allow for a fast way of machining. As a result, the temperatures produced at the cutting edge are in a continual state of flux. Extreme temperature changes occur when the cutting edge enters and exits the cut. The use of cutting fluid extends the life of tools in finishing activities since less heat is generated during these processes than in roughing. This machining process has the potential to result in a curved, exact, or inaccurately sized surface.