Quote:
Originally Posted by damdfw
Doug,
Keep at it and I'm sure you will get that broken bolt out. I was wondering where you found the cobalt tip universal bit. I have been trying to drill through some very hard stainless steel and have broken numerous cobalt bits.
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This is the manufacture of drill bits that I found works best on hardened steel. WAY better than cobalt bits, but the blade is different and I think that plus the tungsten carbide makes the difference:
Brand is ARTU. I know they have them at ACE, but they don't have them at Home Depot (nor any other bits that work with a crap for this purpose). Funny because I at first dismissed ARTU because of the long list of "universal" applications they list on the package. Figured that meant that it wouldn't work well on a specific high intensity application like drilling steel.
http://www.acehardware.com/product/i...Id=44124371604
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