Official Answer
Answer
Don babban taro na zoben karkace na ciki (tutsin tudu), ana amfani da kayan aikin 'Sleeve and Plunger'. Hannun yana da ɗigon ciki wanda a hankali yake matsa zoben zuwa diamita kaɗan kaɗan fiye da na gidan. Daga nan sai mai shigar da zoben ya tura zoben ta hannun rigar har sai ya kai ga tsagi, inda ya tsinke. Wurin taper ya kamata ya zama marar zurfi (yawanci $3^{∘}$ zuwa $5^{∘}$) don rage ƙarfin da ake buƙata da kuma guje wa ɓata saman zoben. Wannan hanya daidai ce a cikin layukan haɗin kai na kera motoci, saboda yana hana 'over-compression' wanda zai iya faruwa tare da filaye na hannu kuma yana tabbatar da cewa zoben ba'a 'spiraled' a ciki, wanda zai iya lalata gefuna na tsagi.
