Ke wili ʻana i nā kia miter liʻiliʻi,Ma muli o ke ʻano o kā lākou noi,nā kia miterua hana pinepine ʻia me ka pololei e hōʻoia i ka hana maʻalahi a hōʻemi i ka friction. He mea nui loa kēia no ka mālama ʻana i ka pono a me ka hōʻemi ʻana i ka ʻaʻahu ʻana i nā ʻōnaehana mechanical. Hoʻohana nui ʻia nā kia miter i nā ʻano ʻoihana like ʻole, me ke kaʻa, robotics, mīkini hana lāʻau, a me nā ʻōnaehana mechanical like ʻole kahi e pono ai nā loli i ke kuhikuhi a i ʻole ka hoʻoili ʻana o ka mana ma nā kihi ʻākau.