how do I remove a sheered off bolt

[Burl Vibert]

I've had better luck using the square type extractors, Proto brand,
never broken one off.  I never use the spiral ones any longer. 
Another option is EDM which is kind of like welding in reverse.  Some
better machine shops may have one.

Burl Vibert
1987 5kcstq
Kingston, Ontario


Joshua Van Tol wrote:
> 
> >Eezee Out.  They're a device for which you drill a hole down the
> >center of a bolt and then tap in with a hammer before turning back
> >out.  Sometimes, if you can find a left-handed drill bit (for
> >drilling with a counter-clockwise twist), that alone will help
> >remove a frozen-in bolt.  The advantage of an eeze-out is you don't
> >have to retap the hole.
> 
> Except that eeze outs only work about 10% of the time. And sometimes
> they break off in the hole, and are impossible to drill out because
> they're at least as hard as a drill bit.
> 
> There's a technique involving welding a nut on with a mig welder
> that's supposed to work quite well. Go over to the air cooled vw
> newgroups, or type2.com and look in the archives, or ask about this.
> Air cooled vw's by their very nature experience a LOT of broken off
> bolts.