ʻO ka pahi ʻoki kani kani i hoʻohālikelike ʻia me nā mea ʻoki kuʻuna
1. ʻAʻohe mea e pono ai ka ʻoi oi, ʻaʻole pono ke kaomi nui, ʻaʻole ia e hoʻopōʻino i ka ʻai.
2. Ma muli o ka haʻalulu kani ultrasonic o ka ʻoki ʻoki, ʻoi aku ka liʻiliʻi o ke kūpaʻa friction, a ʻaʻole maʻalahi ka mea ʻoki e pili i ka maka.
3. ʻO kēia mau mea viscous a me nā mea elastic, nā mea hau hau, e like me nā keke kalima, nā hau hau kūikawā, a me nā mea'ē aʻe he nani a me ka maʻalahi o kaʻoki.
