Cutting tools is the collective term of instrument for removing materials of shear deformation. These include drills, lathes, saws, millers among others. They are further classified by their material, geometry such as flute count and rake angle, and even the primary purpose which could either be roughing or finishing. The design, tool life, feed rate, and cutting speed dictate the functionality as well. For instance, a carbide tool has a steel cutting tempo of 80 to 300 meters per minute. All these tools are a necessity in the machining industry. They affect the Ra value, the averaged surface roughness measured in micrometers and the efficiency of production.
