HSS Twist Drill

ʻO ka wili wili he mea hana e hoʻoheheʻe i ka puka pōʻai i loko o kahi mea hana ma o ka ʻoki ʻana e pili ana i kahi axis paʻa. Ua kapa ʻia ʻo ia no ka mea, ʻo kona ʻano puʻupuʻu puʻupuʻu he ʻano spiral a me ke ʻano he wili. Hiki ke loa'a i 2, 3 a oi paha na auwaha wiliwili, aka, he 2 mau awawa ka mea ma'amau. Hiki ke hoʻopaʻa ʻia nā wili wili ma nā mea hana wili lima lima lima a i ʻole hoʻohana ʻia ma nā mīkini drill, nā mīkini wili, nā lathe a me nā kikowaena mīkini. ʻO nā mea wili wili i ka maʻamau he kila mea hana kiʻekiʻe a i ʻole carbide.

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