Ka haere ngā I-rākau e hanga nei i runga i te pūnaha rua heke. Ko te tuatahi ko te whakapēhi, ko te tuarua ko te tohutohu CNC. Ki te kiko mātau ake ake, e 19 ngā pūwhakapēhi me 128 ngā pūtohutohu CNC, ka waihotia te hanganga. Ko ngā whakairaaka 6061 me te 7075 o te whare ātea whakaaro ki te whakangungu, e whai ana i te tūmanako me te tūpuhi. E whakamahi ana ngā I-rākau hoki i te hanga mō ngā wāhanga kore whaimana me ngā wāhanga hapahoro, ā, mō ngā pūnaha mahi me ngā pūnaha hanga hoki. Ka whakahaere mātou i ngā whakamātau kore whakaeawehei hei whakamana i ngā whakaaetanga me ngā tūponotanga e whai ake nei. Mō tō kaupapa inati, ka taea e mātou te whakarite i ngā taiohoratanga me ngā tahuhu mata.