ʻO ka hoʻopuni ʻana i ka lihi metala ke kaʻina hana o ka wehe ʻana i nā lihi ʻoi a i ʻole nā ʻaoʻao burr mai nā ʻāpana metala e hana i kahi ʻili laumania a palekana. He mau mīkini paʻa nā wili slag e wili i nā ʻāpana metala i ko lākou hānai ʻia ʻana, e wehe ana i nā slag kaumaha a pau me ka wikiwiki a me ka maikaʻi. Hoʻohana kēia mau mīkini i kahi moʻo o nā kāʻei wili a me nā pulumu e haehae maʻalahi i nā hōʻiliʻili ʻōpala kaumaha loa.
