fred wrote:
In article , Bill
writes

Angle grinder..........

Seriously an angle grinder with the guard removed and a thin disc,
maybe a shade suicidal but it works well. I removed a window rack
bolt this way only a few weeks ago. If you have 3mm gap you should
be able to get the disc in without damaging the door or frame.

I'm sure some one will come up with less dramatic methods though.

A slightly more sedate method would be to remove the hinge pins if
you can and lift the door out that way,


All good stuff but I don't think there is any reason to remove the
guard, it should rotate when loosened and there should be plenty of
depth with a new 115mm disc.

A thin (1.6mm) disc will certainly make it less of a drama, more
clearance and less metal to cut out. Treat the striker plate as
sacrificial and cut close to it, you'll get a free replacement with
the new lock. If the bolt has (internal) hardened rollers, just keep
going, they'll give in eventually.

SF do them as thin as 0.8mm
http://www.screwfix.com/prods/71334/...22mm-Pack-of-5


--
Dave - The Medway Handyman
www.medwayhandyman.co.uk