How to best mortice out a door jamb / frame ... ?

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Hey ... just bought a really great bit of kit to help me fit loads of locks - basically a jig that clamps to the door and allows you to use a power drill to rout out a perfectly centred mortice which will accept the lock and face plate.

However ... the jig is too narrow to enable one to then fit it to a door jamb or door frame. I have looked high and low on the internet to see how joiners normally go about the routing on a door frame, and just can't find ANYTHING! Is this some sort of dark secret art? Or is it just a case of drilling out with a wide flat bit, and then chiselling out everything else by hand?

Any tips/ideas/secrets would be very gratefully received ...
 
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wouldve thought within the kit you would have the jig to enable the cutouts on the frames/linings?

look on ebay for lock jigs etc.

or if you can do it ,make up a couple of home made jigs.
 
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you say you can use an ordinary drill, instead of a router?

have you got a link?
 
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you normally use the keep as a guide to chisel out the shape a job not really suited to a jig ??
 
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This link for John D:

http://www.ironmongerydirect.co.uk/...e_locks_and_latches/55011/dbb_morticer/247397

It does work very well ... but as I say, it can only cope with doors up to 55mm thick.

gregers - I think you're right, I'll have to make my own jig up and use a router rather than the DBB morticer. Just find the whole chisel & mallet thing very time consuming, and love the cleanliness of something routed!
 
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Just use a drill to make mortice and clean up with a chisel, matter of minutes.
Thumb plane helps sink any plates.
 
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Thanks - I'll look at a thumb plane, hadn't heard of that before.

Well - now done three with just drill & chisel - actually, you're right, doesn't take too long, and is quite flexible in a way.
 

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