Hana ʻia ia me ka alumina kiʻekiʻe / calcined keʻokeʻo corundum / kiʻekiʻe kiʻekiʻe kiʻekiʻe kiʻekiʻe kiʻekiʻe silicon carbide / makamae alumina hui a me ka ikaika kiʻekiʻe aniani fiber mesh lole ma o ka ʻenehana hana ʻoihana. He kala kū hoʻokahi a he hiʻohiʻona. ʻAʻole i loko o ka sulfur, ka hao a me ka chlorine, e hōʻoiaʻiʻo ana i ka ʻoi o ka maikaʻi o ka huahana. ʻOi aku ka lahilahi ma mua o nā huahana kuʻuna, hana i ka lōʻihi a me ka ʻoi, mālama i nā mea maka, ʻaʻole puhi i nā mea hana, ʻaʻohe burrs. Hoʻolālā apo kū hoʻokahi; me ka hoʻohana ʻana i ke kila kila maikaʻi loa; ʻaʻole maʻalahi i ka lepo a me ka ʻōpala. ʻO ka hoʻolālā ʻupena ʻelua i hoʻonui ʻia: paʻakikī loa, palekana e hoʻohana, ʻoi a paʻa.