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.