ʻO ka ʻokoʻa ma waena o nā pahi anu a me nā pahi wela no ka ʻoki hao ʻo ia kaʻu makemake e kamaʻilio pū me ʻoe.

ʻO ka mea mua, cutnā hopena ʻino:

ʻili anu: ʻōlinolino a paheʻe ka ʻili e ʻoki ʻia e like me ke aniani. ʻAʻohe ʻūhū a ʻaʻohe walaʻau i ka wā e ʻoki ana nā pahi anu. Ma ke kaʻina ʻili ʻili he wela liʻiliʻi, a liʻiliʻi ke kaomi ʻana o ka ʻili i ka paipu kila, no laila ʻaʻole hiki ke hoʻololi i ka paia o ka paipu a me ka waha paipu.

Nā ʻili wela: ʻike maʻamau ʻia nā ʻili wela ma ke ʻano he pahi lele lolouila a me nā ʻili friction. ʻO ka ʻoki ʻoki kiʻekiʻe e hoʻoulu ai i ka wela kiʻekiʻe a lele ka ʻulaʻula ma nā ʻaoʻao a pau, a he poni ka ʻili o ka ʻoki ʻana me ka burr a me ka uila.

ʻO ka lua, ke kaiapuni hana a me ke kumukūʻai:

ʻili anu: ʻaʻole hoʻohana ʻia ka lāʻau wela i ka wā e hana ai. Maʻemaʻe ke kaiapuni hana, ua emi ka ikaika o ka hana.

Wela ʻikes: tʻano paʻakikī kona ʻano hana no ka mea pono e hoʻomehana. E like me nā koi hou aku no ka ikaika kino a me ka wela o na limahana, ʻano kiʻekiʻe ke kumukūʻai.

ʻO ka hope, ka mālama ʻana:

ʻili anu: ka loko a me waho he mau burrs liʻiliʻi, maʻemaʻe a maʻemaʻe ka ʻili wili, ʻaʻohe mea e pono ai ka mālama ʻana, mālama i nā kaʻina hana a me nā mea maka.

ʻili welas: ka loko a me waho he nui burrs, kahi e pono ai ka mālama ʻana e like me ke poʻo palahalaha chamfering, hoʻonui i ke kumukūʻai o ka ikehu kanaka a me ka hoʻohana ʻana i nā mea maka.

Ma luna o nā mea a pau, ʻike ʻia ua ʻoi aku ka maikaʻi o ka ʻoki anu ʻoki ʻana i ka hana a me ka pōmaikaʻi waiwai i hoʻohālikelike ʻia me ka saw wela.