slow - fast semi automatic rolling ball sculpture. . marble machine marble run HD

Lockdown 2020 build .Rolling ball sculpture ( Number 3) marble machine. made from copper wire, brass wire and copper tube. base is teak hardwood . slow - fast marble run. takes 18 balls (10mm) and has 2 drop tracks and 1 start track, balls collect in a removable copper pot . This piece is available to buy. Music: https://www.bensound.com