4 Sun 48 Step
This is another "sliding panel" puzzle box, that looks and operates just like the genuine Japanese puzzle boxes. A "sun" is a Japanese measurement of about 1.22 inches, but only refers to the length of the box, not the width or height. Four sliders at each end have to be moved in order to raise one end and lower the other end, so that the top and base can be moved. Eventually the top will be released. The box requires 48 moves to open, and there is a small drawer in the base panel. But there is another secret to this box, revealed in the video. Not to hard make, but there are a lot of pieces to it. This kit is made from 1/8" birch plywood.
Outside dimensions: 5" length, 3 3/4" width, 3" depth
Inside dimensions: 3 3/4" length, 3 1/2" width, 1 7/8" depth
Hidden compartment: 3 5/8" length, 3 1/4" width, 1/4" depth