CNC machining is a common industrial process with specific design features that work best. Learn the ins and outs of CNC design as we break them down in this detailed guide. Computer numerical control (CNC) machining is a subtractive manufacturing method using a number of high-speed, precise machines to achieve desired structures. Basically, parts of a block of material are gradually stripped away using a variety of methods, including cutting, drilling, beveling, and slotting, among others. As with all manufacturing processes, better results can be obtained by accommodating the specifics of CNC machining into the design stage. Following a brief review of the kinds of CNC machines, this article will go into detail on a number of design aspects. For all the above machines, material is removed from a solid block of metal or plastic, with various high-speed cutting tools performing the different processes required. The majority of tools used for CNC processes have a cylindrical shank with a specific tip shape and a limited overall cutting length. As the material is removed from the workpiece, the geometry of the tool is transferred onto the part. This means internal features of a CN...