Numerical control or numerically controlled (NC) machine tools are machines that are automatically operated by commands that are received by their processing units.

An entire manufacturing technology known as CAD/CAM has developed around the NC concept and, in addition, CNC with its powerful microprocessors and other enabling technologies proffered from the personal computing phenomenon has enabled the NC concept to branch into many variants, even a variant that is essentially record/playback. The latter of which are known in the industry as "teach lathes".

I have designed plastic parts and mould forms for Power Tools. 3D designing of Power Tools, plastic details, drawings and documentation, NC programs for CPU machines with CAD/CAM software Euclid3.