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Old 02-09-2006, 02:09 PM
samiam4 samiam4 is offline
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Join Date: Jul 2002
Posts: 1,141
I'd be suprised if it was that hard!

You can probably cut it with HSS. The pull it method will work I bet- like you are planning. I'd probably get it hot with the blue wrench and get behind it with my trusty Mac tool diesel injector pullers- little prybars. That or even a pair of large channel locks.
I'd avoid the welder method b/c if it doesn't move, as the weld cools- it will be make the whole thing shrink requiring more force!

Do you have the ability to sharpen drill bits? I can do some sizes well on my small lathe with a grinder. Done big non-split points by hand on a bench grinder... That would be the down side of cobalt.

Excellent bit though!

Michael McGuire
83 300d
01 vw A4 TDI
66 Chevy Corsa
68 GMC V6 w/oD
86 300E
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