> >   To remove a broken tension bolt I installed  a left hand drill in

 > the end of a shaft to run through the housings and it worked great.
 >   Ken Welter

 You can take a regular bit and grind a left hand cutting end and turn it
 backward and do the same thing (most of the time).  You have to clear
 the chips often if it doesn't catch and unscrew itself.

 Bob Darrah

Ken Welter wrote:

  I don't think so, the left hand bit can be found at Napa and Snap-on.

 
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