Ngā Wāhanga Mīhini Ahuwhenua Mata o te Kaiparau
I te wā e parau ana, ka pāngia tika te hea parau e te waku kaha me te pānga ki te onepu, ki ngā kōhatu, me ngā pakiaka hua i roto i te oneone, koia te wāhanga tere rawa te pakaru o te parau katoa. Ko tōna mahi e whakatau tika ana i te kounga o te parau me te whakapaunga wahie. Ka taea e te hea parau kounga teitei te pupuri i te koki tapahi koi tonu, ka whakaiti nui i te ātete ki te kukume, ka āwhina i ngā tarakihana ki te penapena wahie me te whakarite kia pumau te hohonu o te parau me te kapi oneone. I tetahi atu taha, ko te hea parau kua pakaru me te mangu ka arahi ki ngā uauatanga ki te tapahi, te hohonu o te parau, te pikinga o te whakapaunga wahie, ā, ka pā kino ki te kounga o te rui purapura i muri mai.
He maha ngā wā ka hangaia ngā pito parau kounga teitei o ēnei rā ki te maitai boron, ki te maitai ātete-mau rānei i te koranu iti maha-huānga. I hangaia mā te tukanga whakarewa tika, mā te tukatuka tinei isothermal, mā te maimoatanga whakamahana rānei, ka whakakotahihia te hanganga whakarewa me te pakeke teitei me te pakari pai - he mārō te mata, ā, he ātete-mau, he pakari te tuara, ā, he ātete ki te whati. Ko ētahi hua papai he paparanga koranu tungsten carbide kua whakatakotoria ki runga i te mata hei hanga i te pānga o te mata huri-ake, e pupuri ana i te koi o te pito parau i te wā e mau ana, e haehae ana.
Me tino ōrite te whiriwhiri i te pito o te parau ki te tauira o te tinana o te parau, ā, me whiriwhiri te rauemi me te matotoru e tika ana i runga i te āhua o te oneone (oneone onepu, uku, whenua kirikiri). He mahi whakaaro nui te tirotiro auau me te whakakapi i ngā pito o te parau kua tawhito hei tiaki i te tinana o te parau, hei pupuri hoki i ngā mahi whai hua me te iti o te utu.
I roto i te poto, ko tēnei 'whao rino' ngaro, me tōna ake patunga tapu ātete-kakahu, e tiaki ana i te ngākau o ngā mīhini ahuwhenua me te tautoko i te tukanga tuatahi me te mea nui rawa atu i te mara.








