The impossible dovetail box

Outside look causes the impression of impossible box (first scene of the video). In fact the box can be assembled and dissembled by diagonal motion (second scene of the video). The box is equipped with a lock that consists of red magnet and yellow ball. The magnet keeps the ball at lock position. Strong strike separates the ball from the magnet thus the box can be opened (last scene of the video). For assembling back, insert the upper part (in white) to right position and flip the box 180 deg. The ball com