papa whakapiri karbona
He whakamahinga whakarerekē te whakapapa karboni i ngā kāripi, e whakaheke ana i te hanganga matū, e whakangau ana i te kaha nui me te mohiotanga iti noa. E whai ake nei ngā rākau whakapapa karboni i waenganui i ētahi rānei o ngā tūru karboni, i mahia ki roto i ngā hāpai paihere matatini, ka hangaia he rākau whakarite e pai ana i ngā whakamahi whaihua. Ka hangaia ngā kāripi i runga i tētahi wā moemoeā, ka whakarereka i ngā karu karboni i waenganui i ngā tuhinga hei whakapai i te kaha me ngā āhuatanga paihana. Ko tēnei rākau matua e whai ana i te ūnga kaha ki te mohiotanga, ka whaihua i ngā rākau tawhito pērā i te toki riro me te whutupōro, ahakoa te pai raweke tonu ki te mate uruwhenua me te mate koromiko. E whaihua ana ngā kāripi i te whakamātau ā-rohe me te whakamātau ā-wāhi i waenganui i ngā āhuatanga taiao me ngā wāhanga wehewehe, koinei te pai noa i te whakamahi mō ngā raraunga rangi, motokā, me ngā whare rākau whaihua. Ki te whakapae atu i tana whakatūngia, ka whakaaetia te whakarerekē i te rahi, te kīrearea, me te tahuhu matawhāiti, ka whakaae ai ngā ingeniā me ngā tiaki kura ki ngā hiahia ā-momo. Ko ngā āhuatanga matua o te rākau nei e kite ana i te kawe huringa ā-huarangi, te kawe huringa ā-rorohiko, me te whakapau kiriata huringa, koinei te pai raweke i ngā whakamahi matatini me ngā whakamahi paihere.