Computer numerical control (CNC) is a computer "controller" that reads G-code instructions and drives a machine tool, a powered mechanical device typically used to fabricate components by the selective removal of material. CNC does numerically directed interpolation of a cutting tool in the work envelope of a machine. The operating parameters of the CNC can be altered via a software load program.Says Wikipedia
CNC is kinda getting bigger. Machine shops are getting killed by places who can do it. You can also carve your face into a pumpkin using it.
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