ukwenziwa kwamashishini kwenziwa nokuba ngoomatshini bokushicilela okanye ngeehamile eziqhutywa ngumoya ocinezelweyo, umbane, iihydraulics okanye umphunga. Ezi zando zinokuba neentsimbi ezibuyiselanayo kumawaka eeponti. Iihamile ezincinci zamandla, i-500 lb (230 kg) okanye ubunzima obungaphantsi kokubuyisela, kunye noxinzelelo lwe-hydraulic zixhaphakile kwi-art smithies ngokunjalo. Ezinye iihamile zomphunga zisasebenza, kodwa ziye zaphelelwa lixesha ngenxa yokufumaneka kwezinye, eziluncedo ngakumbi, imithombo yamandla.