I wanted to Build an enclosure that i could 3d print the parts for and that could be resized without a complete redesign. By reusing the parts or changing the lengths you can build a sealed or unsealed box with or without a bottom and hinge any side. the hinges push into the rails and everything is designed to fit 5mm panels. i used clear acrylic but mdf or coreflute would work i think.
I printed everything i needed for my enclosure on four build plates worth of bits on an ender 3 but with a bit of reorganization you could make that more efficient.
I'm still cleaning up the bits so the print with no supports and have no post print cleanup but im not quite there yet.