Glue could gum up the whole lock !!..
here is a neat trick I saw a lock smith use .. find the smallest jigsaw (coping saw) blade possible & snap
it in the middle then slip the thin saw blade into the lock beside the key with the teeth pointing up .
apply a small twist & pull so the blade teeth "bite" into the key ..
voila ..

"Dr. Rainer Woitok" wrote:

> Glen and others,
>
> On Mon, 2001-01-15 20:44:56 -0700, LA & Glen wrote:
>
> > ...
> > While I was attempting to get my locking gas cap off my 85 Double-Cab I broke the key off in the lock.
>
> You may want to use one of these fast hardening glues, one of those that
> harden in less than a minute.  Apply glue to one or both surfaces of the
> broken key (depending on how your brand of  glue should be used), at the
> same time making sure  to not glueing  the key to the  gas cap.  Put the
> key parts together the right way, hold for a minute or so with as little
> moving as possible, then try to pull the key.  Did work for me once.
>
> Good luck.
>
> Sincerely
>  Rainer
>
> '89 Caravelle GL Syncro 16"
>
>  ----------------------------------------------------------------------
> | Rainer M Woitok                  | Phone: (+49-9131) 85-27811,-27031 |
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> | Germany                          | Mail: Woitok@RRZE.Uni-Erlangen.DE |
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--
Mark J Lortie PhD
Division of Nephrology & Hypertension
UCSD School of Medicine
La Jolla CA.
858-552-8585 x 7139