Twin Haƙorin Zaren Ruwa
Sabuwar ci gaban fasaha na yanke zaren shine ruwa mai siffar geometric na musamman (hakora biyu tare da kwane-kwane daban-daban). Wannan haɗin gwiwar yana ba da damar adadin bugun jini don samar da cikakken zaren don ragewa da kusan kashi 40% idan aka kwatanta da kayan aikin hakori guda ɗaya, yayin da kuma yana haɓaka rayuwar kayan aiki.
Ko da yake a zahiri yana da ruwan wukake mai haƙora iri-iri, amma babban ƙwanƙwasa Tap TT (twin-toothed blade) ya shawo kan matsalar da ke da alaƙa da kayan aikin haƙori da yawa na gargajiya, wato, girgizar da ta haifar da babban ƙarfi. Idan aka kwatanta da ruwan wukake na al'ada, yankan gefen TT Blade yana da ɗan gajeren tsayi mai tsayi, wanda ke rage ƙarfin yankewa kuma yana rage haɗarin girgiza. Kuma saboda ɗan gajeren tazara (t size) na siffar hakori zuwa gefen TT ruwa, zaren za a iya na'ura kusa da mataki.
Wata fa'ida ita ce, ana niƙa ruwan wukake na TT a daidaitattun ɓangarorin 16, kuma sauran wuƙaƙen haƙori suna buƙatar manyan blanks masu tsada. Makullin yankan inganci na TT ruwan wukake shine ƙirar "ƙananan haƙori/Gama siffar haƙori", wanda a cikinsa haƙoran haƙora sun fi guntu fiye da karewa. Saboda haka, zaren gubar ba shi da zurfi sosai fiye da zaren na biyu.
A kowane hali, waɗannan haƙoran ta wata hanya suna daidaita daidai gwargwado na bayanin martabar haƙoran da aka ƙera. Kwakwalwar haƙori na farko na aikin aikin Cheijin yana nuna kyakkyawan jagora mai tsayi fiye da haƙori na biyu na ƙãre kwane-kwane. TT Blade yana kammala yanke guda biyu daban-daban maimakon kammala yanke guda biyu iri ɗaya a zurfin daban-daban. Kowane haƙori an inganta shi don inganci, kuma a gaskiya kowane haƙori yana ba da haɗin gwiwa tare da juna don samar da cikakkiyar siffar haƙori da wuri-wuri.
Bugu da ƙari, kowane haƙori yana cire kusan daidai da kayan da aka ambata don kula da ma'auni na ƙarfin da aka wuce zuwa kushin wuka. Wannan ba yana nufin cewa sabon nau'in yankan gefen ba idan dai ana iya sarrafa bugun jini cikakken zaren, kawai yanke wani ƙaramin sashi na ƙarar yana da kusan daidai, ruwan wukake ta wasu bugun jini don kammala abincin radial.
