Hey, Mike!
Before you buy some more carbide masonry bits, why not get some TiN Coated
Carbide drills?
The masonry bits are designed to "plow" thru concrete...If you get a real
drill, it'll have cutting edges
& may last longer, especially if you flood it with cutting oil...
Better yet, I'd try a LEFT-handed carbide drill...Ya might get it to bite
into the tap & jar it loose enuff to thread itself out...HTH,
Bob Smith (DAKSY2K on AIM)
(What ya REALLY need is an E.D.M!)
Averill Park, NY
2K DAK SY CC Sport + V6 4X4 5 Speed
WebPage URL: http://home.nycap.rr.com/daksy/
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