ʻO ke ʻoki kuʻuna ʻo ia ka hoʻohana ʻana i ka pahi me ka ʻoi ʻoi e kaomi i ka mea i ʻoki ʻia. Hoʻopili ʻia kēia kaomi ma ka lihi o ka maka, ʻoi aku ka nui o ke kaomi ma mua o ka ikaika shear o ka mea i ʻoki ʻia, huki ʻia ka paʻa molekala o ka mea, a ʻoki ʻia. Ma muli o ka huki ʻia ʻana o ka mea ma ke kaomi ʻana, ʻoi aku ka ʻoi o ka ʻoki ʻoki o ka mea ʻoki, a ʻo ka mea pono e hoʻokau ʻia i ke kaomi kiʻekiʻe. ʻAʻole maikaʻi ka hopena ʻoki no nā mea palupalu a elastic, akā paʻakikī no nā mea pili
Ke hoʻohālikelike ʻia me nā pahi ʻoki meaʻai maʻamau, ʻaʻole pono nā ʻoki berena ultrasonic i nā kihi ʻoi, ʻaʻole pono lākou i ka nui o ke kaomi, a ʻaʻole i pōʻino ka meaʻai. I ka manawa like, no ka mea e hana ana ka ʻoki ʻoki i ka haʻalulu ultrasonic, liʻiliʻi ke kūpaʻa friction, a ʻo ka mea e ʻoki ʻia ʻaʻole maʻalahi e pili i ka ʻili. ʻO kēia mau mea paʻa a me nā mea elastic, nā mea hau hau, e like me ka keke kalima, ka ice cream, etc.
