Quad Marble Machine (2020 repaired)
5:14
16MM BALLS WOODEN MARBLE MACHINE - TRIPLE WHEELS - ASSEMBLY
10:17
The Catapult 2024
4:16
alphacoaster #1 - Rolling Ball Sculpture - Kinetic Art
5:21
Test run of tiny wheel
10:01
Marble Machine No.24
2:48
Chronomeans is the finest rolling ball clock
8:41
WORLD'S LONGEST LEGO motorized big Tracked Caterpillar Snake (length 3m/150", 500 large track units)
10:38