Ina whakamahi tatou i te miihini whakairo rakau mo te whakairo, i etahi wa ka tutaki tatou ki nga ahuatanga e tika ana kia mahia e tatou te whakairo pewa. I tenei wa, he maha nga tangata kaore e mohio ki te mahi. Inaa, ko te whakairo pewa o te Ko te miihini whakairo rakau kaore i te uaua, me whakamahi te mahi whakairo o te miihini whakairo rakau.
Ko te whakairo matapae he tohu ara ki runga i te mata kopikopiko e ai ki te ahunga poutū o te mata tukatuka. Ka whakamahia te nuinga mo te tuhi reta, tuhi tuhi ranei, ki te whakairo ranei i etahi tauira ki etahi rauemi whai radians. Ka taea te whakaaro ko te whakamarama i te ahua ki te kurupae o te rama whakarara i runga i te ahunga kua tohua, a ko te atarangi o te ahua e taka ana ki runga i te mata kopikopiko (rererangi) ko te matapae.
E toru nga tawhā e pa ana ki te whakairo matakitenga Arc: kia mau ki te hohonutanga taketake, whakawetohia te utu radius me te huri i te huarahi taketake. Ki te whiriwhiri koe ki te pupuri i te hohonutanga taketake, ma te ara matapaetanga e pupuri te huringa o te hohonutanga taketake. Ka taea e tenei whiringa te tohu i te ara whakairo rererangi ki runga i te mata kia mohio ai ki te tukatuka mata. Mena ka whiriwhiri koe ki te whakaweto i te utu radius, ka taea e koe te tere ake i te tatauranga, engari ka heke iho te tika o nga tauira i tukatukahia e te pouara rakau cnc mihini whakairo . Ki te whiriwhiri koe ki te huri i te ara taketake, karekau te whakairo matapae pewa e whakaputa i tetahi ara taputapu hou, engari ka whakaoti noa i te huringa matapae o te ara kua tohua. Kaore te punaha e whakarereke i te raupapa o te ara taketake, kaore ano hoki e whakarereke i te taputapu o te ara taketake. He muhu te taputapu i tohua mo tenei mahi.
