Nā mea ʻoki ʻoki: He kūpono ka ʻeli ʻana metala maloʻo no ka hana ʻana i ke kila kila haʻahaʻa, ke kila kalapona haʻahaʻa a me ke kila haʻahaʻa, ka hao hoʻolei, ke kila kila a me nā ʻāpana kila ʻē aʻe me ka paʻakikī ma lalo o HRC40, ʻoi aku ka nui o nā ʻāpana kila modulated.
No ka la'ana, ke kila poepoe, ke kila kihi, ke kila kihi, ke kila kanal, paipu huinahalike, I-beam, aluminika, paipu kila kuhilihi (i ka wa e oki ai i ka paipu kila kuhiliʻole, pono e hoʻololi i ka pepa kila kuhiliʻole)