ʻO ka hana ʻana i nā lei he hana maʻalahi a paʻakikī e pili ana i nā pae he nui, e like me ka hoʻoheheʻe ʻana i ka metala, ke kaha kiʻi uea, ka ulana ʻana, a me ka polishing. Ma waena o kēia mau mea, ʻo ke kaha uea metala kekahi o nā ʻanuʻu kumu, e pili pono ana i ka maikaʻi a me ka nani o ka huahana hope. ʻO ka mīkini kaha kiʻi uea 12-die, ma ke ʻano he mea hana metala maikaʻi loa, he hana koʻikoʻi i nā laina hana lei. Hāʻawi kēia ʻatikala i kahi kikoʻī kikoʻī o nā loina hana, nā pono ʻenehana, a me nā noi kikoʻī o nā mīkini kaha kiʻi uea 12-die i ka hana lei.