Njengenxalenye engundoqo yomatshini wokudutyulwa kokudubula, umatshini wokuqhumisa odubula ngokuthe ngqo umisela isiphumo sokucoca umatshini wokudubula.Kukudutyulwa kwentsimbi engena kumbhobho wokungena kumatshini wokudubula odubulayo kwivili eliqhumayo, kwaye ke ivili lokudubula lisasaza intsimbi yentsimbi kwincakuba nganye yomatshini wokuqhumisa, kwaye iblade iqhutywa ngumatshini wokudubula oqhumayo ukujula. intsimbi idutyulwe ngesantya esiphezulu Ukuchaphazela umphezulu we-workpiece ukufezekisa umphumo wokucoca umphezulu we-workpiece.