ʻO ke kaʻina hana ʻana o nā ʻāpana drill coring diamond vacuum brazed he hōʻike i ka ʻenekinia pololei a me ka hana akamai. Mai ka nānā mua ʻana a me ka hoʻomākaukau ʻana i ka ʻeke hope a me ka nānā ʻana i ka maikaʻi, ʻike ʻia kēlā me kēia pae o ke kaʻina hana e ka hoʻokō i ka maikaʻi a me ka maikaʻi. ʻO ka hui pū ʻana o ka ʻenehana kiʻekiʻe, ka hana akamai a me nā ana mana koʻikoʻi koʻikoʻi e hōʻoia i ka hoʻokō ʻana o nā pahu drill i nā koi koi o nā hana wili ʻoihana. Ma ka pili ʻana i nā kūlana hana kiʻekiʻe loa, ʻo ka vacuum brazed diamond coring drill bits he mea pono loa i nā ʻano noi like ʻole, e hāʻawi ana i ka pono a me ka huahana i nā ʻoihana like ʻole.