Kei te hanga ngā waka kōruao nitirikia mō te whakatere i te nitirikia, he momo whenu tūpoto me te pūkana nui. Kua hanga ngā kōruao i runga i ngā whenu e pai ana ki te whakamutu i te nitirikia, pēnei i ngā hāloli inox me te mīhini tuatahi e huringa rawa ana ki te molybdenum rānei, ki te whakapai i aua kōruao i runga i ngā fluoropolymer. E āheitia ana ngā waka nei i ngā whakamahere haumaru, pēnei i ngā kōmuri rua, ngā toanga herehere-tūmu, me ngā rārangi whakamatau pūtupu mō te whakahaere i te ahurea tūpoto o te nitirikia. Me whakaae ngā waka kōruao nitirikia i runga i ngā ture tino whakarite mō te whakatere i ngā taonga huarahi, hei whakangungu i te whakahoki haumaru o tēnei whenu e whakamahi ai i roto i ngā marae pakihi pēnei i ngā ukuwhenua, ngā pūtauawe, me te pūhanga mahinga.