ʻO ka milo metala, ʻike ʻia hoʻi ʻo ka milo a i ʻole ka wili ʻana, he kaʻina hana metala e pili ana i ka hoʻohuli ʻana i kahi disiki metala a i ʻole ka paipu ma luna o ka lathe me ka hoʻohana ʻana i ke kaomi me kahi mea hana e hana ai i kahi ʻano i makemake ʻia.Hoʻohana mau ʻia ke kaʻina hana e hana i nā ʻano cylindrical a conical e like me nā kīʻaha, nā ipu, a me nā pale kukui, a me nā geometries paʻakikī e like me nā hemispheres a me nā paraboloids.
I ka wā wili metala, hoʻopaʻa ʻia ka disc metala a i ʻole ka paipu ma luna o ka lathe a hoʻololi ʻia me ka wikiwiki kiʻekiʻe.ʻO kahi mea hana, i kapa ʻia he milo, a laila kaomi ʻia i ka metala, e hoʻoheheʻe ʻia a lawe i ke ʻano o ka mea hana.Hiki ke paʻa lima a kau ʻia ka mea wili ma ka lathe.Hoʻopau pinepine ʻia ke kaʻina hana, me ka hoʻomaʻemaʻe ʻana i ke ʻano me kēlā me kēia pā a hiki i ka loaʻa ʻana o ke ʻano hope.
Hiki ke hana ʻia ka wili metala me ka hoʻohana ʻana i nā metala ākea, me ka aluminika, ke keleawe, ke keleawe, ke kila kila, a me ka titanium.Hoʻohana maʻamau ia i ka hana ʻana i nā ʻāpana no ka aerospace, automotive, a me nā ʻoihana kukui, a me nā mea hoʻonaninani a me nā hana kiʻi.