Official Answer
Answer
Don samar da girma mai girma, shigarwa na hannu na zoben karkace tare da filaye ko sukudireba yana jinkiri kuma yana da haɗari da zazzage sandar. Maɗaukakin maɗaukaki ko 'toshe' yana ba da damar faɗaɗa zobe a hankali yayin da ake tura shi axially. Wannan yana tabbatar da haɓakawa daidai yake a kewayen kewaye, yana hana samar da isasshen wuri. Ya kamata kusurwar taper ta zama marar zurfi (yawanci $15^{\circ}$ zuwa $20^{\circ}$) don rage ƙarfin da ake buƙata. Da zarar zoben ya isa tsagi, sai ya 'dauke' zuwa wurin. Wannan hanyar tana da sauƙin sarrafawa ta atomatik kuma tana tabbatar da kiyaye tsarin zobe, wanda ke da mahimmanci don aiwatar da ƙarfin 'ƙuƙwalwa'.
