Answer
Dole ne tsagi ya yi zurfi fiye da kaurin zoben $t$ kuma yana da sasanninta masu kaifi don rage lokacin da aka yi amfani da shi. Madaidaicin radius na kusurwar da aka ba da izini shine yawanci $0.1$ mm zuwa $0.2$ mm. Idan tsagi ya yi zurfi sosai ko kuma yana da radius da ya wuce kima, zoben na iya 'tasa' ko kuma a sami nakasu na roba, wanda zai haifar da gazawar da wuri ta hanyar 'birgima' maimakon tsaftataccen ƙarfi. Ana ƙididdige ƙarfin ƙarar zobe kamar $ P_s = D \ cdot t \ cdot \ pi \ cdot \ tau_{ult}$, yayin da ƙarfin tsagi shine $ P_g = D \ cdot d \ cdot \ pi \ cdot \ sigma_y / S $, inda $ d $ shine zurfin tsagi kuma $ S $ shine aminci. Da kyau, kayan tsagi (sau da yawa ya fi laushi fiye da zobe) ya kamata ya zama ƙayyadaddun ƙayyadaddun abu, wanda aka tsara don samar da dan kadan don rarraba kaya.
