Na rọba CNC machining (Digital Kọmputa Control), akụkụ a na-arụpụtara site n'iji n'ikuku nke plastic ngọngọ site digital igwe igwe igwe.Nkà na ụzụ prototyping ngwa ngwa a dabara adaba maka mmepụta otu n'ọnọdụ nyocha ọrụ.
CNC machining nke plastic prototype akụkụ bụ ihe a na-akpọ "mwepu" usoro n'ihi na e nwere mwepụ nke ihe onwunwe.Nhọrọ dị iche iche nke resins na-enye ohere ịnweta akụkụ na "ihe ziri ezi", si otú a na-enye ohere maka ihe ndị na-emepụta ihe dị nso na akụkụ nke injection-molded (ABS, PC, PP, PVC, POM, PMMA, PA 6/66).