What is CNC milling and turning?

CNC means Computer Numerical Control. CNC milling and turning are subtractive manufacturing processes where CNC controlled cutting tools remove material from a workpiece to create a desired shape. The difference between milling and turning is that in milling, the workpiece remains stationary, while the workpiece rotates in turning operations. CNC milling and turning can be used to create any shape, no matter how complex the geometries.