I drew some lines to work out from, sawed on the correct side of them with my small Japanese pullsaw, and got busy using the chisel to mortise out all the wood.
This part of the project also took quite some time, but in the end I had a nice snug fit of the rear tote.
The front transition could have been better, but since it will be covered by the blade 99% of the time, I decided that I would stick with the result.
A nice epoxy glue would have been my preferred medium if I had been at home, or a good wood glue a second choice.
Out here the only glue we have it some superglue and some too old winter grade glue where most of the solvents have vaporized over time, leaving the glue with a consistency like marshmallow.
I chose the marshmallow glue, because I have never really liked superglue or cyanoacrylate that much.
I might end up regretting it, but I figure that if everything else fails, I can still pour down a bit of superglue into the glue crack.
Clamping the assembly after gluing wasn't very easy. but I managed to secure it after a couple of attempts.
I believe that this glue has passed its prime.
Clamping arrangement of infill and tote.