Construction|Educational-Cheatwell Games Engenius Contraptions – Perpetual Marble Run

This simply brilliant marble run is made of plywood, with all the parts coming laser-cut in sheets – just follow the simple set of pictures to push-fit them together. With a build time of 1-2 hours, assemble the spiral run and zig-zag before adding the electric motor. The marbles are raised to the top of the lift, descending down the spiral then down the zig-zag track…then back up to the spiral to start again, in perpetual motion. Winner of Gift of the Year 2019, fun and extremely satisfying to build and mesmerising to watch.