Mu pulasitiki CNC Machining (Digital Computer Control), gawo amapangidwa ndi Machining mu unyinji wa chipika pulasitiki ndi makina digito mphero.Ukadaulo wa prototyping wofulumirawu ndiwoyenera kupanga mayunitsi potengera kuyesa kogwira ntchito.
CNC Machining wa zigawo pulasitiki prototype ndi otchedwa "subtractive" njira chifukwa pali kuchotsa zinthu.Kusankhidwa kwakukulu kwa utomoni kumalola kuti magawo apezeke mu "zinthu zoyenera", motero amalola kuti makina azikhala pafupi ndi gawo lopangidwa ndi jekeseni (ABS, PC, PP, PVC, POM, PMMA, PA 6/66).