Te tukanga tapahi tūnga piriti (hononga-iti) o te mīhini tapahi muka taiaho
Ko te tukanga tapahi tūnga piriti he whakarite kia kaua e wehea ngā wāhanga me te pereti i te wā e tapahia ana, kia mau tonu hoki ngā pūwāhi hononga iti ki ngā tūranga ōrite, kia mau ai te haumaru o te pane taiaho i te wā e tere haere ana. Ka taea e tēnei tukanga te tāpiri aunoa i te maha o ngā tūranga piriti e tika ana kia rite ki te roa o te āhua. Hei tāpiri, ka taea te wehewehe i ngā āhua o roto me waho, ā, ka whakatau mēnā me tāpiri ngā tūranga piriti, kia hinga ai te āhua o roto (ngā rauemi para) kāore he tūnga piriti, ko te āhua o waho (ngā wāhanga) me ngā tūnga piriti ka piri ki te rauemi matua, ā, kāore e hinga, ā, kāore e hiahiatia he whakarōpūtanga.
Ina temīhini tapahi muka taiahoI te tapahi i te rēseri, ka tautokona te pepa whakarewa e ēnei pae tautoko niho. Mēnā kāore i te iti ngā wāhanga kua tapahia, kāore e taea te taka mai i te āputa o ngā pae tautoko; ki te kore e nui, kāore e taea te tautoko i ngā pae tautoko; i tēnei wā, ka ngaro pea te taurite ka piko ake. Ina tukinga te pane tapahi tere-rahi ki a ia, ka mutu te mīhini i te iti rawa, ā, ka pakaru te pane tapahi i te kino rawa atu.
Ka taea te karo i tēnei āhuatanga o runga ake nei mā te whakamahi i te tukanga tapahi tūnga piriti (hononga-iti). Ina whakarite te mīhini tapahi muka reera i te tapahi reera o ngā whakairoiro, ka momotuhia te āhua kati i ētahi wāhi kia piri ai ngā wāhanga ki ngā rauemi e karapoti ana i muri i te tapahi, ā, kia kore ai e taka. Ka kiia ēnei wāhi momotu he piriti. Ka kiia hoki ko ngā pūwāhi pakaru, ko ngā hononga-iti rānei. Ko te tawhiti o te momotu he tata ki te 0.2 ki te 1 mm, he rite te āhua ki te matotoru o te pepa. I runga i ngā koki rerekē, he rerekē ngā ingoa: i runga i te āhua, kua momotu, nō reira ka kiia he pūwāhi pakaru; i runga i te wāhanga, ka piri ki te rauemi matua, nō reira ka kiia he piriti, he hononga-iti rānei. Ka whakamahia e te mīhini tapahi muka reera te tukanga tapahi piriti i roto i te tukanga tapahi hei whakarite kia maeneene te haere o te tukanga tapahi katoa me te whakapai ake i te wā tapahi. Hei tāpiri, ka taea e ia te whakaora i ngā tukanga uaua me te whakapai ake i te whai huatanga o te whakamahinga o te mahi.
