Answer
Idan zoben karkace bai zauna cikakke a cikin tsagi ba, duban farko shine 'Groove Diameter' da 'Groove Width'. An ƙera zoben karkace don samun takamaiman sharewar radial. Idan tsagi ya yi zurfi sosai (diamita ya yi girma don ciki ko kuma ƙanƙanta don waje), za a 'cire zoben.' Wani batun gama gari shine 'juyawa' zoben matsewa; idan an shigar da zoben da hannu ta amfani da motsi mai karkace kuma ƙarshen ba'a 'tsaye' a wurin ba, ana iya rataye shi a gefen tsagi. Injiniyoyin su tabbatar da cewa tsagi ba shi da burrs kuma cewa 'free diamita' na zobe daidai ne. Don zoben ciki, idan an yi kwangilar zoben da nisa yayin shigarwa, zai iya ɗaukar saiti, yana rage matsi na waje kuma ya hana shi gabaɗaya zuwa cikin tsagi.