I roto i te paipa torinotukanga whakaputa me te whakamahi, i reira e whakaaro he rota o te pai fehokotaki'anga me tikanga o te hanga, nui whai wāhi ki te whanaketanga u, me te tere o te ahumahi, engari ano hanga kua papaitia tenei ahumahi i roto i te whanaketanga.Ko tehea o te pewa kua rukuhia ko te tikanga whakahiato i roto i tetahi mea hou i te tau 1940, ko te taha o mua o te waahi he rite tonu te whakakii a-ringa, te whakamahi ranei i te para hei tiaki, engari ehara tenei i te paninga hiko para, kua hangaia hei whakarewa i te rere ki waho. .Hurihia i muri i te waea, te taputapu tuku waea me te pereti me te waea, ka tukuna tonu te waea, ka whangai tonu tenei waea whakapiri i roto i te rewharewha kowhatu kowhatu e hipoki ana i te waea whakarewa arc, nga mea turanga me tetahi waahanga o te rewa me te whakaetonga puka rere. he kohao, ko te pewa ko te mura o te ahi i roto i te rua o roto, no reira ka kiia ko te pewa kua ruuma.Ka tanumia te pewa ki roto o te rua.Kei roto i te punaha utaina o te hopper flux welding he tuku tarukino i roto i te putorino ki te paiherea ki mua o te momo tuarua o te welding e whakamahia ana, ko te whakamahi waea, na te mea ka taea te tuku tonu te waea;Rod, he tokotoko e me tahu tatou he mahunga fehokotaki'anga hoatu te maka, a ka mutu te mahi, a ka huri fehokotaki'anga hiko.

Na ko taua tikanga whakahiato i whakaritea ki etahi atu tikanga ko te painga nui, ko te painga tuatahi kua tino aunoa;te painga tuarua, kua tanumia ki raro i te arc fehokotaki'anga, na te reira i te whakawhiti wera me te tiaki o te mahi āhua kaha, te kounga teitei fehokotaki'anga ki waho;painga tuatoru, no te mea te pewa fehokotaki'anga ruku tanumia i roto i te rere, kia taea te whakamahi i te reira i te nāianei nui, fehokotaki'anga pai āhua tiketike.