This is a working Japanese puzzle box. 8 move.
You may need to sand the edges of the end slides to get a smooth movement, but you need some friction so the parts don't move by themselves
Print one of each file except two for the top, middle, and bottom end covers
The EndSlideWithSlot piece should be installed on the end with the more complicated key map
The EndSlide piece should be installed on the end with the simple key map