"CNC" stands for "computer numeric control". Generally, CNC machinery use computers to drive a piece of equipment as it makes a part. Routers, mills, lathes, and plasma torches are all examples of equipment that was originally designed to be operated manually and only later retrofitted with controls to make the process automatic. While such things as laser engravers, vinyl cutters, and 3D printers aren't traditional pieces of CNC equipment, they have been placed on this page since each requires the creation of an electronic design file before the process can be completed.