ʻO ka mīkini ʻoki ʻoki he mīkini e hoʻohana ana i hoʻokahi maka no ka hana ʻana i ka neʻe laina laina e ʻoki i ka pā e pili ana i ka maka ʻē aʻe. Ma ka hoʻoneʻe ʻana i ka ʻaoʻao o luna a me ka ʻaoʻao haʻahaʻa i hoʻopaʻa ʻia, hoʻohana ʻia kahi ākea ākea kūpono e hoʻopili ai i ka ikaika ʻoki ʻoki i nā papa metala o nā ʻano mānoanoa e wāwahi a hoʻokaʻawale i nā papa e like me ka nui i makemake ʻia. ʻO ka mīkini shearing kekahi o nā mīkini forging, ʻo kāna hana nui ka ʻoihana hana metala. Hoʻohana nui ʻia nā huahana i ka hana ʻana i ka metala, mokulele, ʻoihana māmā, metallurgy, ʻoihana kemika, kūkulu, moana, automotive, mana uila, nā mea uila, nā mea hoʻonaninani a me nā ʻoihana ʻē aʻe e hāʻawi i nā mīkini kūikawā a me nā hoʻonohonoho piha.