A process that combines lighter milling passes with high spindle speeds and high feed rates to achieve a very high metal-removal rate, high-speed machining helps reduce cycle time, increase tool life and increase shop productivity. Machinists use high-speed machining to make their work faster and easier. Faster productivity rates mean the machines can produce more parts in a short period. machining, also known as subtractive manufacturing, is a prototyping and manufacturing process that creates the desired shape by removing unwanted material from a larger piece of material. Machining is a part of the manufacture of many metal products, but it can also be used on other materials such as wood, plastic, ceramic, and composite material. Much of modern-day machining is carried out by computer numerical control (CNC), in which computers are used to control the movement and operation of the mills, lathes, and other cutting machines. This increases efficiency, as the CNC machine runs unmanned therefore reducing labour costs for machine shops.