When last I left, we were at this stage:
The frame was assembled on the briefcase, but the panel edges extended all around the frame and needed to be trimmed.
Here was a little angle I chipped to prevent blowing out the end grain.
I had a big long explanation typed up to explain what is going on here and what blow out is and the subtleties involved, but honestly it was getting way too wording and I was doing a poor job explaining. So I deleted it. Basically I need to take more pictures and devote another posting to it.
Whoops! Trimmed a little too deep...
But that's why smoothing planes were invented.
Now it was time to cut the sucker open. The first task is to strike a line all around the box where the cut will be. This is easily done with a marking gauge. Note where the line falls on the dovetail and how the irregular spacing of the joint makes sense now.
My plan was to start each cut in the corners with the dovetail saw and then finish them off with the big (and new to me) sash saw. Here is an initial corner cut:
Moving up to a bigger saw (with a new handle by Yours Truly)...
...and just trying to connect those corners with as straight a line as possible:
Soon one cut...
and another and another and then:
Then I just added SOSS hinges...
...and stained it:
Actually I beveled some edges and then I stained it.
So that's where things sit now. I still need handle and catch hardware but that stuff is easy to install. I'm already on the next project actually...you can see a sneak peek in the background of the last picture there. Yeah, that's some wild grain going on up there and it's really tough to work with.