Hana ʻia ka pahi i nā mea tungsten carbide, akā loaʻa nā mea ʻē aʻe. E like me HSS, 9CrSi, Cr12Mo, VW6Mo5, Cr4V2, paʻa paʻakikī, a me nā mea'ē aʻe. Hoʻomaʻamaʻa wela i kāu hale hana ponoʻī e hōʻoia i ka paʻa o ka huahana. ʻO ka ʻaoʻao o ka pahi he ʻoi, ʻoluʻolu, ʻoi aku ka paʻa a paʻa, hiki i nā mea hoʻoponopono kikoʻī i lawe ʻia mai ke hana i nā ʻano huahana like ʻole e hōʻoia i ka pololei o nā huahana.