<P> The milling process removes material by performing many separate , small cuts . This is accomplished by using a cutter with many teeth , spinning the cutter at high speed , or advancing the material through the cutter slowly ; most often it is some combination of these three approaches . The speeds and feeds used are varied to suit a combination of variables . The speed at which the piece advances through the cutter is called feed rate , or just feed ; it is most often measured in length of material per full revolution of the cutter . </P>
tools made from high-speed tool steel are generally used for what type of machining operations
milling