Answer
Ƙarshen-wasa ita ce keɓancewar axial tsakanin ɓangaren da aka riƙe da zoben riƙewa. Idan wasan ƙarshe ya wuce kima, ɓangaren da ke riƙe zai iya yin aiki kamar guduma-gudu yayin hawan injin farawa/tsayawa, yana isar da tasirin ƙarfi ga zobe. Wannan yana haifar da 'Tasirin Gajiya'. Zoben zai nuna alamun naman kaza ko gurɓataccen gurɓataccen abu a fuskar lamba. Don warware wannan, masu zanen kaya su yi amfani da maɓuɓɓugan igiyar ruwa na 'Cusp' ko 'V-dimbin yawa' a bayan zoben karkace don ɗaukar duk izinin axial, tabbatar da cewa zoben koyaushe yana ƙarƙashin ɗan ƙarami kaɗan da hana haɓakar kuzarin motsa jiki.