28-geared, 3D-printed cube
Shapeways user Maundy created the Steampunk Geared Cube, a magnificent geared confection that came out of the 3D printed fully assembled!
The cube contains a total of 28 gears, all of which turn from manually rotating only one (though the designer notes that rotating two gears results in a smoother motion). The outermost gear on each side has handles for easy rotation, and each is linked to its adjacent gear in an interlocking pattern. Once one gear is spun, the others correspondingly spin along.
In addition to the fascinating pattern and mechanics, the cube has a tray in the middle for holding various small objects. The product also comes with a stand and a lockable lid, which is placed on top of the cube and can be locked and unlocked by rotating the gears.