Ko te papu parai te mea hei akiaki i te hau i hangaia e te pauna hau mā roto i te miihini, kātahi ka tae atu ki te putea hau mā roto i te takirere tirotiro. Kātahi ka takahia e te taraiwa te papu matua ki te papu matua, ka heke te piston o te papu matua ki raro, ka arahina te hau ki te paipa parai, kātahi ka akiakihia e te papu parai te rakau hurihuri, kia nui ake ai te diameter o waho o te hu parai, kia honoa ai te pahu parai, ka hua ake te haumaru o te waka i te wā e taraiwa ana.
Ko te kaupapa mahi o te papu parai waka ko:
1, ko te kaupapa matua o te mahi a te pērai he mea hanga mai i te waku, mā te āwhina o te papa pērai me te kōpae pērai (pahu) me te waku o te potae me te whenua, ka hurihia te pūngao nekeneke o te waka hei pūngao wera i muri i te waku, ka mutu te waka;
2, me kaha te pūnaha parai pai me te tere pānga pai ki te whakarato i te kaha parai pumau, rawaka, me te whakarerekē, ā, he pai te kaha tuku waipēhi me te kaha whakamarara wera, kia tino whai hua ai te kaha e tukuna ana e te taraiwa mai i te pēra parai ki te papu matua me ia papu, ā, kia ārai i te pakaru waipēhi me te hekenga o te parai e pāngia ana e te wera nui;
3, Kei roto i te pūnaha parai waka te parai kōpae me te parai pahu, engari i tua atu i te painga utu, he iti ake te whai huatanga o te parai pahu i tērā o te parai kōpae, nō reira ko te pūnaha parai e kōrerohia ana i roto i tēnei pepa ka hangai noa ki te parai kōpae. He nui ngā kōrero mō te kounga o te tiaki i tō waka hou.
