CNC Turning is a machining process in which a cutting tool, typically a non-rotary tool bit, cuts the material by moving more or less linearly while the workpiece rotates. Usually, the term turning is reserved for external surfaces, whereas this same essential cutting action when applied to internal surfaces (holes, of one kind or another) is called boring.

On the live tooling machines, we can drill cross holes too, ordinarily this would be a separate operation carried out on another machine, saves time, reduces costs, improves efficiency.