The Impossible Pop-up Cube (experiment)

The perfect pop-up cube does not exis... Experiment Sunday - Almost perfect. Maybe with even more precision but this is the best I could do what seemed to be impossible, to have a straight pop-up cube build on the centerfold. Inside the cube there’s a lot going on like a v-fold that pushes out the mechanism from the inside, and the center walls are connected with two struts that force the center back wall to move parallel with the center front wall. Sandwiched by the struts is a vertical pillar that pushes out the roof mechanism. This was all needed to get all surfaces as straight possible.