Corundum ʻeleʻele

He kūpono ka corundum ʻeleʻele no ka hoʻoponopono ʻana i ke kila, hoʻohana ʻia no ke aniani sandblasting, lako hana forging hale papahele. Ma waena o nā abrasive maʻamau, ʻoi aku ka liʻiliʻi o ka paʻakikī o ka corundum brown. Eia nō naʻe, i ke kaʻina wili, ʻoi aku ka maikaʻi o ka hana anti-crushing o kāna mau ʻōpala abrasive, i kūpono no ka wili ʻana i nā metala me ka ikaika tensile kiʻekiʻe, e like me ka wili a me ka wili kaumaha o ke kila maʻamau, ʻoi aku ka maikaʻi no ke kila kalapona, ke kila kila maʻamau, a no ka wili ʻana i ka hao a me ke keleawe paʻakikī.