> It's called a Drill-Out (trade marked and patented). It's a left hand
> drill bit with a self-centering tip with a screw down expanding collet/
> extractor.
...
> 2) Advance the collet/extractor down towards the drill tip so that 2 or
> 3 theads are showing. Bring the drill up to the recommended RPM
> speed and insert tool into the hole. The collet/extractor will
> engage the top of the broken bolt and extract it.
I have never had a bolt or stud break off with less torque than some amount
FAR beyond the maximum that any electric drill I've ever used could hope to
produce (or any EZout could hope to transmit, for that matter...)
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John R. Lupien
lupienj@wal.hp.com
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