Ko te mahi matua o te whatunga waka ko te whakaurunga me te whakapūhautanga o te tāke wai, te miihini, te hauhautanga, me ētahi atu, hei ārai i te kino o ngā mea ke ki ngā wāhanga o roto o te waka i te wā e taraiwa ana, e whakaatu ana hoki i te ataahua o te tangata. I roto i te hangarau motuka, ka whakamahia te whatunga hei uhi i te tinana o te waka kia uru ai te hau.
He maha ngā waka he mata whatu kei mua o te motuka hei tiaki i te radiator me te miihini.
Ko ētahi atu momo waka e kitea whānuitia ana kei raro i te parepare o mua, kei mua i ngā wira (hei whakamatao i ngā parai), kei mua mō te hauhautanga o te kāpata, kei runga rānei i te taupoki o te pouaka o muri (mō ngā waka miihini o muri te nuinga). He mea ahurei te Midnet, ā, he maha ngā waitohu e whakamahi ana i tēnei hei tohu matua mō rātou.
I ahu mai a Metalchina i te mākete waka whakarerekē o Amerika i te tekau tau atu i 1980, ā, i tere tonu te rongonui. I tēnei wā, ko te konumohe rererangi te rauemi matua mō te whatu whakarewa, nā te mea he mama ake i te papa kowiri tira.
He hangarau whakakanapa whakaata matatau tōna mata, ā, he kanapa tōna e rite ana ki te mata whakaata matomato. He pango te ārai-waikura o te pito o muri, he maeneene pērā i te hārini, e hanga ana i te mata o te mata whatu kia toru-ahu, kia nui ake te whakaatu i te āhua o te rauemi whakarewa.
Nā te awe o tōna "ahurea karāti", ko te whatunga reo whakarewa rongonui i te Hononga o Amerika he whatunga reo whakarewa "whakakapinga", arā, ko te whakakapi i te whatunga reo motuka taketake ki tētahi whatunga reo whakarewa hou. Nā te hiahia ki te wetewete i te whatunga reo motuka taketake, he iti noa iho te kaha o te tangata ki te mahi me ngā taputapu o te papaanga.
