1) Makinawa ali ndi mawonekedwe ophatikizika, dongosolo labwino lowongolera, ntchito yabwino komanso makina apamwamba kwambiri.
2) Magawo omwe amalumikizana ndi zida amapangidwa ndi chitsulo chosapanga dzimbiri chapamwamba kwambiri, chopanda njira yofewa, yosavuta kuyeretsa.
3) Kulondola kwambiri, valavu yodzaza kwambiri yothamanga kwambiri, mulingo wolondola wamadzimadzi popanda kutayika kwamadzimadzi, kuwonetsetsa kudzazidwa kwabwino.
4) Mutu wa capping umatenga chipangizo chokhazikika cha torque kuti zitsimikizire mtundu wa capping.