About this 3D model

This rotating hourglass box has a unique design and is ideally suited to store dice or other small items.The hourglass is skeletonized to see through and rotates, when the bottom gear is turned. The hourglass itslef drives the top iris mechanism, which openes and closes the box in a very satisfying motion. The box is easily assembled, a detailed video guide is included. There are no additional items needed, except from any type of lubricant (spraying grease), which i highly recommend to achieve a very smooth mechanism. Minimum printer size: 120x120x120mm