Although CNC machining has advantages over other manufacturing processes, it may not be suitable for all manufacturing applications, and other processes may be more appropriate and cost-effective. While this article focuses on the mechanical CNC machining process that uses machine tools to produce custom-designed parts or products, CNC control can be integrated into a variety of machines. Other mechanical CNC machining processes include ultrasonic machining, water jet cutting and abrasive jet machining.
In addition to mechanical machining, chemical machining, electrochemical machining, and thermal machining can also be used. Chemical machining processes include chemical milling, blanking, and engraving; electrochemical machining processes include electrochemical deburring and grinding; and thermal machining processes include electron beam machining, laser cutting, plasma arc cutting, and electrical discharge machining (EDM).