He pahu pauda nani loa kēia. He huinaha, a ʻo ia ke ʻano hoʻololi o ka magnet. Loaʻa iā ia ʻelua ʻāpana, hoʻokahi kūpono no ka waiho ʻana i ka pauka, ke aka maka, ka pauka ʻula, ke aka a me nā mea ʻē aʻe; Hiki ke waiho ʻia kekahi ʻāpana me kahi pulupulu liʻiliʻi e kōkua i ka hoʻomaikaʻi ʻana i ka pono o ka huahana. Hele mai me ka aniani makeup no ka hana maʻalahi i kēlā me kēia manawa a ma nā wahi āpau.