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.
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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).