Rolling Ball Sculptures | Marble Machines by Steven Kozari Frank

Marble Machine 8x6x5" No.1

It’s made from copper, wires are soldered together. Has 3 tracks with features like flat spiral, zigzag, loop with a track trough, horizontal spiral. It is made on a natural-looking beech wood base. The electrical components are engraved at the bottom. The speed is adjustable.
Full size with acrylic cover box: 200x160x130 mm. It has 10 mm steel balls.