Mu gutunganya plastike ya CNC (Igenzura rya mudasobwa ya Digital), igice gikozwe nogukora mumashini ya plastike ikoresheje imashini zisya.Ubu buryo bwihuse bwa prototyping burakwiriye kubyara umusaruro murwego rwo kugerageza imikorere.
CNC gutunganya ibice bya prototype nuburyo bwitwa "subtractive" kuko hariho gukuraho ibikoresho.Guhitamo kwinshi kwa resinike bituma ibice biboneka muri "ibikoresho byiza", bityo bigatuma ibikoresho bya mashini byegeranye nigice cyatewe inshinge (ABS, PC, PP, PVC, POM, PMMA, PA 6/66).