Having cut away the ragged edges of the broken mortice, I cleaned and squared it up with a chisel. There isn't much point gluing a patch in there as it will only really glue to the tenon adding no strength.
I could splice in another bit of oak, but decided to mortice it in instead.
I drilled an chiseled out a mortice into the leg, it came out at 17mm by 7.5mm, and 22mm deep.
I cut a strip of oakand formed a tenon to fit. An additional bit of oak was glued to it to form the top of the mortice.
The repair splice was glued in and left to cure.
In the meantime I cleaned up the tenon of all the old glue and readied it for a dry fit.
It worked fine, the joints nice and tight, so I glued and clamped it before stopping for dinner.
I will check it in a little while to make sure it is still square and leel, and to remove the clamps and clean up the glue squeeze out while it is still 'rubbery'.
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