Three tracks keep the action moving in this rolling ball sculpture. 1" glass marbles travel through a variety of kinetic elements before returning to the top on the chain lift.

The first track features a loop-d-loop, where the marbles’ natural backspin slows them as they exit the loops. The second sends the ball through a tall, narrow coil before it exits at high speed and strikes a “marbles on track” element, sending the waiting marbles rolling.

The third track begins with an adjustable ball-collecting tipping arm. It can release after collecting a single marble or be adjusted with counterweights to hold as many as three. From there, the marbles travel through a flat spiral and another tipping arm that spaces them apart before they enter a series of horizontal zig-zags.

All three tracks eventually meet at a flat steel plate, where the marbles are collected onto a single return track for another trip up the chain lift.