ʻO nā koi hana no ke kila silika ka mea nui: ① Haʻahaʻa haʻahaʻa hao, ʻo ia kahi hōʻailona koʻikoʻi o ka maikaʻi o nā ʻāpana kila silika. Hoʻokaʻawale nā ʻāina āpau i nā māka e like me ka waiwai poho hao. ʻO ka haʻahaʻa o ka hao hao, ʻoi aku ka kiʻekiʻe o ka papa. ② He kiʻekiʻe ka ikaika o ka induction magnetic (magnetic induction) ma lalo o kahi kahua magnetic ikaika, e hōʻemi ana i ka nui a me ke kaumaha o nā cores o nā kaʻa a me nā mea hoʻololi, e mālama ana i nā ʻāpana kila silika, nā uea keleawe, a me nā mea insulating. ③ He maʻalahi ka ʻili, palahalaha a ʻaʻahu i ka mānoanoa, hiki ke hoʻomaikaʻi i ka hoʻopiha piha o ke kumu. ④ ʻOi aku ka mea nui o nā waiwai punching maikaʻi no ka hana ʻana i nā mīkini liʻiliʻi a me nā mīkini liʻiliʻi. ⑤ʻO ke kiʻiʻoniʻoni insulating ili he adhesion maikaʻi a me ka weldability, hiki ke pale i ka corrosion a hoʻomaikaʻi i nā waiwai punching.