1. Bakin karfe yana da halaye na babban filastik, babban ƙarfi, da ƙarfin zafi mai ƙarfi, kuma yana da mummunan hali don yin aiki mai ƙarfi, wanda ke buƙatar mafi girman ingancin bandeji.2. Tushen ya kamata ya sami mafi kyawun juriya na zafi da juriya mai girma. Talakawa bimetallic band saw ruwan wukake amfani da sawing carbon karfe kayan ba dace da sarrafa tabo