Ko te whakamātautau tapahi whakawhiti he whakamātautau hei whakatau i te piri o te paninga, te tānga rānei ki tētahi kaupapa.
Ka taea te wehewehe ki ngā taumata ASTM 5, ko te teitei ake o te taumata, ko te kaha ake o ngā whakaritenga. Mō te karāhe he tānga hiraka, he paninga rānei, ko te taumata paerewa ko te 4B me te horahanga pakaru <5%.
E mōhio ana koe ki te whakamahi?
-- Whakaritea te pouaka whakamātautau tapahi whakawhiti
-- Ko te whānui o te mata o te mata he 1cm-2cm te roa, me te wehenga 1mm – 1.2mm i te wāhi whakamātautau, 10 ngā mata katoa
-- Horoia te wāhi kua tapahia ki te paraihe i te tuatahi
-- Tāpirihia he taputapu mārama 3M hei tirotiro mēnā kua tihorea tetahi paninga/peita
-- Whakatauritea ki te paerewa hei tautuhi i tōna tohu
Saida Glasse whai tonu ana kia noho hei hoa pono māu, kia rongo ai koe i ngā ratonga kua tāpirihia te uara.
Wā tuku: Hōngongoi-17-2020