great design, but I think that it needs a solid modifier at the base of the screw, extending into the screw. I got a little aggressive and drove the corner post through the 3 thin layers of plastic and knocked off both posts. It's mostly a me problem with being heavy handed and having too much elephant foot on the pins. I have it printed, just need to assemble the modified print.

A little finicky to get it to stay in place, perhaps a remix with the tabs on one piece and slots on the other. I already lost half of the rear piece behind the wall.