Me pēhea te kore e taka te peita o te kowiri tira? E rua ngā kaupapa e taea te whiriwhiri mō tēnei raruraru, ko tētahi ko te rehu i te paninga epoxy ki te mata o te kowiri tira, kātahi ka rehu i te peita o runga. Ko tētahi ko te peita tuatahi i te pepa whakarewa ki te mata o te kowiri tira, kātahi ka rehu i te paninga, kātahi ka rehu i te peita o runga. Ko te tikanga, ko te papatahi o te mata o te pereti kowiri tira te kaupapa matua, ki te kore e ōrite te rohe, ka taea hoki te whakakotahi me ngā kaupapa e rua.

Me pēhea te kore e peita i te peita kowiri tira? E rua ngā hua ka taea te whakaoti pai i te raruraru, he tino pai te paninga epoxy o te āhua, he kohu tote, he ātete ki te makuku, he ārai-makuku, he wera wera, me ngā āhuatanga o te wera, ā, he pānga wehe pai hoki. He whānui hoki te whānuitanga. Mēnā he papatahi te raro, ka taea e koe te whakakanapa i te rauemi kātahi ka mahi i mua i te mahi, kātahi ka rehuhia te paninga epoxy. Mā tēnei ka whakaoti i te raruraru o te whakaotinga kowiri tira. Mēnā he āhua koretake te rauemi o raro, me pania ki te pungarehu kia tukatukahia, he pungarehu pepa whakarewa anō hoki te āhua, he poto te wā maroke, he ngāwari te paninga, he maeneene te taha huruhuru, he pai te kounga i muri i te whakakanapa, ko te whakaaro kia pania ki te mata o te anga waka, ngā taputapu miihini me ētahi atu. He whānui hoki te rauemi turanga e whakamahia ana, ka taea te whakamahi i roto i te pereti konutea, te konumohe, te pereti maitai, te pereti rino, te maitai karāhe, te whakarewa, me te paparanga peita tawhito.