Nyob rau hauv yas CNC machining (Digital Computer Control), ib feem yog tsim los ntawm machining nyob rau hauv lub loj ntawm ib tug yas thaiv los ntawm cov tshuab milling.Qhov no ceev prototyping tshuab yog tsim rau chav tsev ntau lawm nyob rau hauv cov ntsiab lus ntawm functional xeem.
CNC machining ntawm yas qauv qhov chaw yog ib tug thiaj li hu ua "subtractive" txoj kev vim hais tias muaj yog tshem ntawm cov khoom.Kev xaiv dav ntawm cov resins tso cai rau cov khoom kom tau txais hauv "cov khoom siv zoo", yog li tso cai rau cov khoom siv kho qhov muag nyob ze rau qhov txhaj tshuaj molded (ABS, PC, PP, PVC, POM, PMMA, PA 6/66).