Thanks Rodney. I can't really take any credit for the design though. I had 2 rough cases that I was able to reverse engineer without disassembling and copy them pretty much as they were. They were really a proof of concept. I think if I were to make another one, it would be out of lumber, like the ones you made. These are nice for utility work, but most of my need for cases these days is for display.
I have photos of having glued and clamped these boxes. Then I nailed them together once the glue was dry. I was briefly looking for Tolex for exactly the reason you mention. The corner blocks let me get around some of the inaccuracy of my gluing job, and act as a support at the same time.