Ugears 4820184121270 3D Mechanical Model Kit, 14 Years and Up, Marble Run Chain Hoist, Plywood, 400-Piece

Presenting the Ugears mechanical marble run chain hoist model an exciting combination of art and engineering. The marble run chain hoist is both a beautiful kinetic sculpture and an intricate toy that teaches as it entertains. This DIY wooden marble run features a chain hoist powered by a hand crank and a series of tracks, each with its own unique and fun obstacle or element. Turn the handle clockwise to set the machine in motion and watch as the wooden chain hoist collects and lifts the marbles to the top of the machine, where a three-way switch distributes them on different tracks. One marble plunges down a chute with a loop-the-loop at the bottom; the next tumbles down the various stages of the cascades, while three others are collected in the accumulator then released down one of three short tracks. All marbles pass through the common tray or collector before returning to the chain hoist to be lifted on their next journey.