Surface milling is a machining process that involves removing material from the surface of a workpiece using a cutting tool. The tool moves in a path along the surface of the workpiece, removing material to create a flat or contoured surface. Surface milling is commonly used in manufacturing and engineering to produce flat surfaces, slots, pockets, and contours on workpieces. It is typically performed using a milling machine with a rotating cutter, which can be controlled manually or by computer numerical control (CNC) technology for precise and accurate results. Surface milling is an essential process in the production of parts and components used in various industries such as aerospace, automotive, and medical.