He loea mākou i ka hana ʻana i nā pahi hana metala pepa, i hoʻohana nui ʻia no ka ʻoki pololei ʻana i nā mea e like me ke kila kila, ka pepa keleawe, a me ka pepa alumini. Hana ʻia me ka carbide, mālama ʻia i ka wela vacuum, a wili pololei, loaʻa iā lākou ke kūpaʻa maikaʻi loa i ka ʻaʻahu a me ke kūpaʻa chipping. Hāʻawi lākou i nā ʻoki palupalu, ʻaʻohe burr, a me ke kaumaha ʻole, e kūpono ai no nā noi wikiwiki a kiʻekiʻe. Hāʻawi lākou i ke kūpaʻa kūikawā i ka ʻoki ʻana i ka pepa lahilahi a me ka ʻoki mau ʻana i nā metala palupalu, e hoʻolōʻihi pono ana i ke ola o nā lako, e hoʻomaikaʻi ana i ka hua, a e hōʻemi ana i nā kumukūʻai hana holoʻokoʻa.
