Hiki ke hoʻohana ʻia nā ʻāpana kila i hoʻonui ʻia e like me nā pā hao kalapona haʻahaʻa, nā pā kila kila, nā pā alumini, nā pā keleawe, nā pā nickel, nā pā magnesium, nā pā alumini-magnesium alloy, etc. ʻO kona hiʻohiʻona, ʻo ia ka nui o nā kumu uea liʻiliʻi i hoʻopili ʻia e hana i kahi rhombus a i ʻole nā mea ʻano ʻē aʻe.