Hoʻolauna nui:

Hoʻolālā ʻia kēia mau ʻāpana no ka ʻeli ʻana i ka papa, e hoʻomāhuahua i nā puka pilo no ka hoʻoheheʻe ʻana o nā lua lōʻihi o nā hāʻule hāʻule i loko o nā mines lalo, a me ke kūkulu ʻana i nā lua lawelawe.

Hiki mai nā mea hana hoʻoheheʻe PLATO me ʻekolu ʻano: ʻokoʻa ka bit reamer me ka bit pilot, a i ʻole ka bit dome a i ʻole ka bit opener bit ma kahi kaʻawale.

Pehea e kauoha ai?

Reaming Bits: Diameter + Taper Degree or Thread

Nā Pilot Drill Bits: Diameter + Kino Taper Degree a i ʻole Thread + Back Thread

Nā Bits Dome: Anawaena + Uila

Nā ʻāpana wehe ʻana i ka lua: Reamed Diameter + Pilot Diameter + Thread

Koho Maka Bit

Hoʻolālā Maka	Kiʻi	Palapala noi
Maka Paha		He kūpono nā ʻāpana pahu pahu maka palahalaha no nā kūlana pōhaku a pau, ʻoi aku ka maikaʻi o ka pōhaku me ka ʻoi aku ka paʻakikī a me ka ʻoi aʻe o ka abrasiveness. E like me ka granite a me ka basalt.
Hoʻokuʻu kikowaena		ʻO nā ʻāpana pahu pahu waena e kūpono i ka pōhaku me ka paʻakikī haʻahaʻa, haʻahaʻa abrasiveness, a me ka pololei maikaʻi. Hiki i nā bits ke wili i nā puka pololei.
convex		Hoʻolālā ʻia nā pihi pihi Convex Face no ka wikiwiki o ke komo ʻana i ka pōhaku palupalu.

Koho Puka Carbide

Nā ʻano pihi	Kiʻi	Palapala noi
		Paʻa pōhaku	Ke komo ʻana Ka wikiwiki	Ke ola lawelawe Carbide	Haʻalulu
pōʻai		Paʻakikī	ʻOi aku ka mālie	ʻOi aku ka lōʻihi o ke ola ʻAʻole hiki ke haki	ʻOi aku
Ballistic		ʻAno palupalu	ʻOi aku ka wikiwiki	ʻOi aku ka pōkole o ke ola lawelawe ʻoi aku ka maʻalahi o ka haki	Liʻiliʻi
Conical		palupalu	ʻOi aku ka wikiwiki	ʻOi aku ka pōkole o ke ola lawelawe ʻoi aku ka maʻalahi o ka haki	Liʻiliʻi

Koho Pali

Paʻa lole	Kiʻi	Palapala noi
Palepa Maʻamau		He kūpono nā ʻāpana drill pihi skirt maʻamau no nā kūlana pōhaku a pau.
Kaʻaʻahu Retrac		Hoʻohana nui ʻia nā ʻāpana drill pihi Retrac no ka pōhaku i hoʻohui ʻole ʻia me ka maikaʻi ʻole. Hoʻolālā ʻia ka pālule e hoʻomaikaʻi i ka pololei o ka lua wili a kōkua i ka hoʻihoʻi ʻana i nā mea hana pōhaku drill.