Ko te Mīhini Tuitui Porowhita taha-rua he mīhini kotahi-hāte me te 'mata' kei roto he huinga ngira tāpiri e tū whakapae ana i te taha o ngā ngira rango poutū. Mā tēnei huinga ngira tāpiri ka taea te hanga papanga e rua te matotoru atu i ngā papanga kotahi-hāte. Ko ngā tauira noa ko ngā hanganga hononga-raka mō ngā kākahu o roto/paparanga turanga me ngā papanga riu 1 × 1 mō ngā rekereke me ngā hua kākahu o waho. Ka taea te whakamahi i ngā miro pai ake, nā te mea kāore he raruraru o ngā miro kotahi mō ngā papanga whatu Mīhini Tuitui Porowhita taha-rua.
Ko te miro e whāngaihia ana ki ngā ngira hei hanga i te papanga me kawe i runga i te ara kua whakaritea mai i te pōro ki te rohe whatu. Mā ngā nekehanga rerekē i tēnei ara ka ārahi i te miro (ngā kaiārahi miro), ka whakatika i te kaha o te miro (ngā taputapu whakakaha miro), ā, ka tirohia mēnā ka whati te miro i runga i te Mīhini Whatu Porowhita Taha-rua.
He mea nui te tawhā hangarau ki te whakarōpūtanga o te Mīhini Tuitui Porowhita taha-rua. Ko te ine ko te mokowā o ngā ngira, ā, e pā ana ki te maha o ngā ngira ia inihi. Ko tēnei waeine ine e tohuhia ana ki te reta matua E.
He whānuitanga o ngā rahi ine te Mīhini Tuitui Porowhita taha-rua e wātea ana i nāianei mai i ngā kaihanga rerekē. E tutuki ana i te whānuitanga o ngā ine ngā hiahia katoa mō te tuitui. Ko ngā tauira tino noa ko ērā he rahi ine waenga.
E whakaahua ana tēnei tawhā i te rahi o te wāhi mahi. Mō te Mīhini Tuitui Porowhita Taha-rua, ko te whānui ko te roa mahi o ngā moenga e inehia ana mai i te awaawa tuatahi ki te awaawa whakamutunga, ā, e whakaatuhia ana i roto i ngā henimita. Mō ngā mīhini porowhita, ko te whānui ko te diameter o te moenga e inehia ana i roto i ngā inihi. Ka inehia te diameter ki ngā ngira e rua e anga ke ana. Ka taea e ngā mīhini porowhita diameter-rahi te whai whānui ki te 60 inihi; heoi, ko te whānui tino noa ko te 30 inihi. Ko te whānui o ngā mīhini porowhita diameter-waenga he tata ki te 15 inihi, ā, ko ngā tauira diameter-iti he tata ki te 3 inihi te whānui.
I roto i te hangarau mīhini whatu, ko te pūnaha taketake ko te huinga o ngā wāhanga miihini e neke ana i ngā ngira, e āhei ai te hanganga o te koropiko. Ko te tere putanga o te mīhini ka whakatauhia e te maha o ngā pūnaha e whakauru ana, nā te mea ko ia pūnaha e rite ana ki te nekehanga o te hiki, te whakaheke rānei o ngā ngira, ā, nō reira, ki te hanganga o te ara.
Ka huri te Mīhini Whatu Porowhita taha-rua i te taha kotahi, ā, ka tohatohahia ngā pūnaha rerekē puta noa i te porowhita o te moenga. Mā te whakanui ake i te diameter o te mīhini, ka taea te whakanui ake i te maha o ngā pūnaha, nō reira, te maha o ngā akoranga i whakaurua mō ia hurihanga.
I ēnei rā, kei te wātea ngā mīhini porowhita whānui, he maha ngā whānui me ngā pūnaha mō ia inihi. Hei tauira, ko ngā hanganga māmā pēnei i te tuitui jersey ka taea te whakamahi i te 180 pūnaha.
Ka tangohia te miro mai i te pōkai kua whakaritea ki runga i tētahi pupuri motuhake, e kiia nei ko te creel (mēnā ka whakatakotoria ki te taha o te Mīhini Tuitui Porowhita taha-rua), i tētahi whatanga rānei (mēnā ka whakatakotoria ki runga ake). Kātahi ka arahina te miro ki roto i te rohe tuitui mā roto i te arataki miro, he pereti iti nei me te kōhao maitai hei pupuri i te miro. Hei whiwhi i ngā hoahoa motuhake pēnei i te intarsia me ngā pānga, kua rite ngā mīhini ki ngā arataki miro motuhake.