ʻO ke kaʻina kuʻi metala he kaʻina pololei. Wahi a nā mea metala ʻē aʻe, hiki ke hoʻokaʻawale ʻia i ka hao, aluminika, ke kila kila, a me nā mea ʻē aʻe, ʻo ka mea maʻamau o ia mea he kuʻekuʻe metala, i mea e hana ai i nā ʻano like ʻole.ʻāpana kūlou metala.Piʻo metalaʻO ka hoʻopololei ʻana i ka ʻāpana metala i ke kihi i koi ʻia e nā mea mīkini hana metala, i hoʻohana pinepine ʻia i ka ʻenekinia hana, nā hale kūkulu hale, ka hoʻoikaika ʻana i nā iwi ʻaoʻao a me nā ʻoihana ʻē aʻe.Hoʻohana nui ʻia ka ʻenehana bending metal i ka hana ʻenekinia, kūkulu, mana uila, kaʻa, aerospace, mālama olakino a me nā ʻano ʻē aʻe he nui. Me ka hoʻomau mau ʻana o ka mechanical automation a me ka ʻenehana digital, ua hoʻomaikaʻi maikaʻi ʻia ka puka ʻana o nā mīkini kuʻi maʻamau i ka pono a me ka pololei.ʻāpana kūlou metala maʻamau, e ho'okomo i ke ka'ina ku'o metala i ke kahua hou.