ʻo ka mea mua loa, ‌mea waiwai‌ ʻo ia kekahi o nā kumu nui i ka loiloi ʻana i ka maikaʻi o nā hinges. Hana ʻia nā hinges maikaʻi i ke kila ʻōwili anuanu a i ʻole ke kila kila. He ikaika kiʻekiʻe ka ikaika a me ka'ōlinolino o ke kila anuanu, akā,ʻaʻole kū'ē i ka wai; ʻoiai ke kila kuhiliʻole ka paʻakikī maikaʻi a me ka pale ʻana i ka corrosion, akā ʻoi aku ka kiʻekiʻe o ke kumukūʻai ma mua o ke kila i ʻōwili ʻia. ʻO ka lua, ʻo ka ‌manaʻo‌ʻO ke kī hoʻi i ka hoʻoholo ʻana i ka maikaʻi o ka hinge. Manaʻo ka mānoanoa a loaʻa ka ʻili maʻemaʻe o nā hinges kiʻekiʻe, ʻoiai ʻo nā hinges haʻahaʻa e ʻike ʻia ka lahilahi a me ka ʻili o ka ʻili.  ‌ʻO ka hoʻāʻo paʻa: hiki i ka hōʻike wehe a me ka pani ʻana ke hiki i 50,000 mau manawa. Wahi a ka acid-base a me ka salinity test, hiki i ka manawa kū'ē i ka corrosion o kahi hinge maikaʻi ke hiki i 48 mau hola. I ka manawa like, hiki iā ʻoe ke hoʻokaʻawale i ka maikaʻi a me ka ʻino ma ka hoʻolohe ʻana i ke kani. ʻO ka hoʻolālā ʻana o nā hinges kiʻekiʻe e hoʻokō i kahi hopena leo. ʻO ke kūpaʻa‌ he hōʻailona koʻikoʻi o ka hana hinge. Loaʻa i nā hinges maikaʻi ka ikaika rebound like a paʻa i ka hoʻohana ʻana, ʻoiai ʻaʻole lawa a ʻoi aku ka ikaika o ka rebound i nā hinges haʻahaʻa. Ma ke ʻano o ka waihoʻoluʻu, loaʻa i nā hinges kiʻekiʻe nā waihoʻoluʻu ʻoniʻoni a me nā lapaʻau maʻemaʻe o ka ʻili, ʻoiai ʻo nā hinges haʻahaʻa he mau kala ʻeleʻele a me nā lapaʻau ʻili.   ʻO ka mea hope loa, ʻo ke koho ʻana i nā hinges mai nā hōʻailona kaulana e hiki ke hōʻoiaʻiʻo i kekahi ʻano. ʻOi aku ka palekana o nā hinges mai nā hōʻailona nui ma ke ʻano o nā lako, ka hana, a me ka lawelawe ma hope o ke kūʻai aku.