Zida, zopangira, mpeni, ndiye chisankho chodziwika bwino cha zinthu zokhazikika.
Chopper anasankha osati awiri muyezo, dzimbiri ndi lakuthwa.
Nthawi zambiri mpweya wa carbon umakhala wapamwamba kwambiri, kuuma kwake, kukhwima, kumakhala bwino kusunga, koma kukana dzimbiri kumachepa.
Kupititsa patsogolo kwa alloy kuwonjezera MoV ndikokaniza dzimbiri