I designed this box to hold small watch parts. It is quite small, but saves a lot of space on my watchmaking shelf! There's a notch in the back of the rails and trays to prevent the trays from slipping out by accident.
Designed to be stackable.
Print 5 trays and 4 rails.
When it's all printed, install the rails first (press in), then the top and bottom.
The author marked this model as their own original creation.