Umshini onama-double edger wengilazi enembile ulungele ukugaya ingilazi eyisicaba enezinhlangothi eziqondile ezimbili.
Ukugaya kanzima, ukugaya kahle, ukupholisha i-engeli yokuphepha (isondo elifakiwe le-chamfering wheel) uma sekuqediwe.
Ukuslayida kwekhanda eligayayo ngomhlahlandlela wokugoqa oqondile ophindwe kabili, idrayivu ye-screw yebhola ephindwe kabili ukuze ufinyelele isivinini esinyakazayo esizinzile, uqedele ukuphuma kweselula, unciphise ukumelana nokungqubuzana, ukuze uqinisekise ukuma okuphindaphindiwe.