Kusuntha ma skates 、 trolley yonyamula katundu ingagwiritsidwe ntchito kulikonse komwe zinthu zolemera zimayenera kusunthidwa.Katunduyo amatha kukwezedwa pogwiritsa ntchito crowbar kapena jack, zomwe zimapangitsa kuti ma skates akhazikike mosavuta.Chogudubuza chachikulu chosindikizidwa cha nayiloni chimatsimikizira kuyenda mosavuta ndikufalitsa katunduyo, kuteteza pansi pamtengo wapamwamba ku zowonongeka zomwe zimadza chifukwa cha katundu wapamwamba ndi kuipitsidwa kwa mafuta / mafuta.Ma skate sakonzedwanso ndipo amaikidwa zogwirira ntchito kuti azinyamula komanso kuziyika mosavuta.
Zogwirizana ndi katundu woyenda ndi kuzungulira.Izi zimagwiritsa ntchito kupanga zitsulo zotsika kwambiri za carbon alloy