Ngokusho kobubanzi bokugoqa be-workpiece, kunamamodeli amaningi ongakhetha kuwo. Umshini onemodeli eyodwa ungagoqa ezinhlobonhlobo zamadayamitha.
Umshini ungakwazi ukugingqa izintambo ezihlukene zobubanzi namamodeli wentambo ngokushintsha izibungu (okungenziwa ngokwezifiso, imethrikhi, iMelika, neyintshi).
Isiqukathi se-20GP singalayisha ngamasethi ama-2 noma ama-3 emishini yokugoqa intambo (kuye ngokuthi imodeli yomshini), yonga impahla.