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Hinge recess cutting jig

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Hinge recess cutting jig

Postby 9fingers » 13 Mar 2022, 16:54

I don't claim any originality for this but there might be the odd wrinkle that might help someone.

On my door project I needed to fit 3 hinges and the door jamb are made of softwood with a couple of mm of oak veneer so a bit ticklish to chisel even for those who prefer hand working.
So this jig is for use with a top bearing flush trim bit.

First job is to cut a template with a good fit to the hinges. Mine needed to fit 100 x 30mm hinges.

template.jpg
(46.57 KiB)


I ploughed mine out on the tablesaw.

The thickness of the template needs to match the router cutter so the bearing rides on the template.
In my case my cutter was 25mm plus the bearing so I chose 30mm.

jig depth.jpg
(44.4 KiB)


Subsequently I did find a set of shorter bits here https://www.amazon.co.uk/YIXISI-Templat ... =1-14&th=1

router bits.jpg
(72.05 KiB)


I ordered those for future jobs. They might not turn out to be tip top quality but wont get heavy use but possibly good value overall.

Now we have the template we need a guide to position it on the edge of the door or jamb. This can be marked out from the template.

location piece.jpg
(52.13 KiB)


The dimensional accuracy of this is not critical and can be chewed out on the bandsaw

First cut

bandsaw cut 1.jpg
(51.29 KiB)


second cut

bandsaw cut 2.jpg
(37.77 KiB)


The final depth will get trimmed by the router on the first use.

To make the jig easier to clamp, mark off the corners on the template and remove on the bandsaw ot table saw if you prefer.

Mark corners.jpg
(25.89 KiB)


cut corners.jpg
(30.87 KiB)


Screw the two parts together, I prefer not to glue just incase it needs to come apart for adjustment.

screwed together.jpg
(44.17 KiB)


screwed together2.jpg
(32.11 KiB)


screwed together3.jpg
(49.04 KiB)
.

Now to give it a try.
Clamp to a test piece and sneak up on the correct depth.

clamped to test.jpg
(76.16 KiB)


Whilst the jig is still in place the two corners can be trimmed with a sharp glue scraper/paint tin opener or Chisel as some call them - yes I do use then but very sparingly :lol:

Then offer up the hinge and test the fit adjusting the jig or depth of cut to perfection.

recess test.jpg
(36.63 KiB)


The jobs a good'un.

Bob
Information on induction motors here
https://drive.google.com/file/d/1dBTVXx ... sp=sharing
Email:motors@minchin.org.uk
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9fingers
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Re: Hinge recess cutting jig

Postby Malc2098 » 13 Mar 2022, 18:21

Disappointed in you, Bob!
What about one of those corner cutting jobbies, just one bang and it's done!

(said the actress to the bishop :oops: )
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Re: Hinge recess cutting jig

Postby 9fingers » 13 Mar 2022, 18:33

Malc2098 wrote:Disappointed in you, Bob!
What about one of those corner cutting jobbies, just one bang and it's done!

(said the actress to the bishop :oops: )


I've always steered away thinking they would be a *** to sharpen.
Cutting them with a chisel when the jig is in place work very well keeping the chisel perpendicular.

Bob
Information on induction motors here
https://drive.google.com/file/d/1dBTVXx ... sp=sharing
Email:motors@minchin.org.uk
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Re: Hinge recess cutting jig

Postby Mike Jordan » 13 Mar 2022, 18:51

10ABDA39-C41E-4C25-8896-381CFD8923D3.jpeg
(439.29 KiB)


Mine are not as swish as yours but it’s the same thinking. I use the 30mm guide bush and a standard cutter.
I think writing on the information is more important since it is easy to forget the details. This also has built in depth reference.
Mike.
Last edited by Mike Jordan on 13 Mar 2022, 18:54, edited 1 time in total.
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Re: Hinge recess cutting jig

Postby Stuart » 13 Mar 2022, 18:52

You should’ve used rounded corner hinges Bob, - could have left that pesky chisel in a drawer!
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