Milling is a machining process that uses a rotating multi-point cutter to remove material from a workpiece. In milling, the workpiece is fixed and the cutter rotates and moves vertically to achieve the required depth of cut. There are several types of milling machines categorized by their construction and purpose, including column and knee machines, fixed bed machines, and special purpose machines. The size of a milling machine depends on factors like the working surface area of the table and travel distances, as well as the motor power and number of feeds. Horizontal milling machines cut with the axis of the cutter parallel to the workpiece surface and allow movement in three directions. Key components include the base, column,