Then align the support arm s bottom edge with the bottom edge of the door clamp it in place and rout the mortise as shown above.
How to cut mortises for door hinge with a router.
With this setup hinge mortising becomes a standard template routing operation.
How to cut mortises accurately with a hand held router a straight bit a template guide and a few scraps.
I use a 1 4 straight bit inside a standard guide collar for this task.
Cut your mortises to a depth that will have the hinge sitting as flush to the edge of the door as possible.
The power tool method uses a router and hinge mortising jig.
2 cutting hinge mortises making a door hinge mortise can be done with a chisel but it s more efficient with a standard trim router.
Repeat at the top edge of the door.
Score the outline with a utility knife.
First use a hinge to set the router bit s cutting depth photo below.
The first step in the process of making the hinge mortise is to mark the location of one end of the hinge mortise.
There are many ways to make mortises and just about as many tool options.
I mistakenly assumed that having a mortise about 1 16 too deep would be no big deal.
Then grab a utility knife and extend the blade to no more than 25 in 0 64 cm.
Now clamp one part of the jig so the inside edge is right on this line.
The hand tool method requires just a utility knife a hammer or mallet and a sharp wood chisel.
You can cut a hinge mortise with hand tools or a power tool.
A plunge router is one of the best choices because you can accurately control the depth of cut and the machine delivers clean and precise results.
Drag the blade along each of the pencil lines creating small grooves you ll use later.
Once you re happy with the outline remove your hinge from the door.
The jig is clamped to the door and guides the router through the cut.
When routing the mortises this way you ll cut them to match half the thickness of the hinge barrel.