CNC Machining CNC machining refers to the machining with CNC machining tools. CNC CNC machine tools CNC programming language control, usually G code. CNC Machining G code language to tell CNC machining tools what kind of Cartesian position coordinates, and control the tool feed speed and spindle speed, as well as tool changers, coolant and other functions. CNC machining has great advantages over manual machining. For example, the part produced by CNC machining is very accurate and repeatable. CNC machining can produce parts with complex shapes that can not be finished by manual machining. CNC machining technology is now widely used, most of the machining shop has CNC machining capabilities, the most common CNC machining shop in the typical CNC machining CNC milling, CNC milling and CNC EDM wire cutting (WEDM). Tool for CNC milling is called CNC milling machine or CNC machining center. CNC turning lathe called CNC lathe center. CNC machining G code can be manually programmed, but usually CAD (Computer Aided Manufacturing) software automatically reads CAD (Computer Aided Design) files and generates G code programs to control the CNC machine.