Depending on the inserts used jigs can cut mortises with rounded or squared corners squared corners must be finished later with a chisel.
How to fill in old door hinge mortises.
A piece of lumber cut to the size of the lock can be used to fill a mortise.
There was a slight gap between some of the 2 4 pieces and the door frame so luke came in with some finishing caulk and filled it.
Take a plain piece of wood the width of your door and cut it down until it fits into the shape left by your former door hinge.
Install or remove the corner inserts as appropriate.
This may include covering over any wood stains left by the hinge.
Hold until the glue starts to dry.
Once the wood is the right size glue the inward facing side and then press it into place.
Then gently score the spot using your utility knife creating a clear indication of how deep your mortise should be.
Place the tip of a hinge wing up to the front or back side of the door.
Adjust the mortising jig to the proper hinge size and door thickness.
After that i gave the whole door two coats of kilz primer.