ʻO ka wehewehe pōkole:

Ma hope o ka hana ʻana, hiki ke hoʻomaikaʻi ʻia ke ʻano metala a me kāna waiwai mechanical. Liʻiliʻi a liʻiliʻi liʻiliʻi ke aniani nui kumu a me ka palaoa kristal prismatic, a laila hoʻonohonoho hou ʻia e hana i ka wai wai, looseness, ea a me ka slag i hoʻokomo ʻia a kokoke a paʻa kona ʻano e hoʻomaikaʻi ai i ka plasticity a me ka waiwai mechanical o ka metala. Akā ʻoi aku ka maikaʻi o ka waiwai mechanical o ka ʻāpana hoʻolei ma mua o nā ʻāpana forging ʻē aʻe o ka mea like. Ma waho aʻe o kēia, hiki i ka forging ke hōʻoia i ka hoʻomau ʻana o ka hoʻolālā fiber metala a mālama i ke ʻano o ka fiber a me ke ʻano o waho e like me ke ʻano like, hoʻopiha ʻia ka metala a hōʻoia i ka lōʻihi o ke ola a me ka waiwai mechanical maikaʻi. ʻenehana o ka hoʻohana ʻana i ka forging mold forging. paʻi anu, paʻi mahana he mea like ʻole i ka hana ʻana i ka ʻāpana forging.