In these first two pictures you can see I’ve managed to smooth out the box joints. I planed the end grain of the pins with the No. 4 and then sanded. I also needed to use the small block plane to even out the tops and bottoms so all the corners matched up correctly.
I edge glued two 5.5” pieces together to form the slabs for the top and bottom. I used epoxy. Here they are sanded.
Here’s a test fitting of the top and bottom, things are looking good so far.
-- That's not how it looked on my computer! http://www.megaliquidatordirect.com/