As seen at The MAD Museum.
All of these unique, laser-cut rolling ball kits are available from our gift shop at the museum, as well as our online shop at madfactory.co.uk.
Links to instructions for building these kits are below.
Marble Machine #2 is motorized and features dual tracks with a track switch and a ball accumulator. The lifting mechanism is the wheel type.
Everything you need to assemble the kit is included except for glue and batteries (2xAA). Made from precision laser cut MDF and plywood. Carbon fibre uprights with silicone spacers. 7mm steel balls are included with the kit.
The lifter wheel is pre-assembled and has the pockets for the balls drilled to the right depth and angle. Motor, switch, wires and battery box will need to be soldered.