Ko te kauwhata whakawhanui he hua utu nui e whakamahi ana i te pepa kauwhata maru me te kauwhata maaori whakaata waiariki kia pai ake ai te mahi.Ko te kauwhata whakawhanui i ahu mai i te graphite tawerewere o te kounga teitei me te hangarau whakarerekētanga matatau he hua kauwhata o te karaehe tuatahi e tino rapuhia ana i roto i te maha o nga tono.Ka taea te tapahi rīpene pepa graphite tapatapahi ki nga "waahanga" "waahanga" ranei.