A few years ago my shadow box crashed to the floor. Everything broken. Especially the light which mad a very special effect. I've gotten away with my workbench lamp but I want to recreate that light and needed a box to do it. I made corner supports that I made in a free CAD app and printed them on a 3d printer.
I just assembled it. It's sturdy enough and can breakdown in minutes for storage. Also very flexible in that the wood can be cut to different lengths. This week I'm attacking the light. I'm looking for a picture of it to help me replicate it.
Here some images that show the design in CAD and the initial set up.