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Author Topic: Kobalt couldn't get through but Carbide did it!  (Read 479 times)

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Online theking

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Kobalt couldn't get through but Carbide did it!
« on: May 24, 2018, 05:51:15 PM »
The previous owner broke a couple bolts on the Taco, not sure what he was trying to do. I tried to drill it out with Kobalt tip drill bits but it wasn't too effective so I picked up some Carbide tip bits and it finally broke through. Drilling out hardened steel is a PITA but glad I found the bits capable of doing it.... O0






The bit I used got pretty hot though:




Here's a comparison:




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Offline Mr_Mechanic

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Re: Kobalt couldn't get through but Carbide did it!
« Reply #1 on: May 24, 2018, 06:18:32 PM »
Those are hammer drill bits.  I’ve never seen them use on steel but cement or things of that nature.  Good job though.



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