Aosite, daga baya 1993
3. Diamita mai ɗaukar nauyi yana da girma kuma farantin bango yana da kauri. Ingancin hinge na farantin ya dogara ne akan ingancin abin ɗagawa. Mafi girman diamita mai ɗaukar nauyi, mafi kyau, kuma girman bangon, mafi kyau. Riƙe yanki ɗaya na hinge a hannunka kuma bari ɗayan yanki ya zamewa da yardar kaina a cikin saurin iri kuma a hankali.
4. Kusa kuma ku saurari sautin bazara kuma ku sassauta kofin gwajin hinge. Maɓallin hinge shine aikin sauyawa, don haka wannan yana da mahimmanci. Ana ɗaukar maɓalli daga maɓuɓɓugar waje da maɓuɓɓugar ciki na hinge, kazalika da taron rivet. Saurari sautin rufewar hinge, ko yana da kyau, idan sautin rufewa ya yi rauni, yana tabbatar da cewa ƙarfin bazara bai isa ba, kuma akwai matsala tare da kauri na kayan; duba idan kofin hinge yayi sako-sako, idan akwai sako-sako, yana tabbatar da cewa rivet ɗin ba ta da ƙarfi kuma yana da sauƙin faɗuwa. Rufe kuma rufe sau da yawa don ganin cewa shigar a cikin kofin ba a bayyane yake ba. Idan a bayyane yake, yana tabbatar da cewa akwai matsala tare da kauri na kayan kofi kuma yana da sauƙi don "buga kofin".
5. Gwada dunƙule kuma daidaita shi da ƙarfi. Yi amfani da screwdriver don daidaita screws na sama da na ƙasa sau uku zuwa huɗu tare da ɗan ƙaramin ƙarfi, sannan cire sukulan don ganin ko haƙoran hannun hinge sun lalace. Domin an kafa hannun hinge da kayan ƙarfe, ba shi da wahala kamar dunƙule, kuma yana da sauƙin sawa. Bugu da ƙari, idan madaidaicin bai isa ba a lokacin aikin masana'anta, yana da sauƙi don haifar da zamewa ko cirewa.