Shutter Puzzle Box Playing Cards we promise you'll be rewarded

we promise you'll be rewarded with a deep sense of satisfaction

But ingenious engineering makes the motion possible

Close inspection reveals that each of the trefoils is marked with a unique arrangement of double-sided grooves

just like in lunar excursions

Shutter Puzzle Box Playing Cards we promise you'll be rewardedWe discovered this beautiful puzzle while traveling through the mountains of Hakone, Japan. We were already impressed with the seven exotic kinds of wood used in the construction but when we saw the top slide open, our jaws dropped. The rotating mechanism reminded us of a camera shutter or a blooming flower. Turns out, the designer, Hiroshi Iwahara, was inspired by robot anime and the spiraling metal doors that led to a secret base. If you decide to