Steve Moseley combined electric motors, gravity and ingenuity to build these marble tracks for his sons’ bedrooms. According to Steve, the key ingredients are 1/8-in. Baltic birch plywood, which bends nicely, and engineering software, which lets him make scale templates of the parts. We think there must be some sorcery involved, too.
“I put about 200 hours into these contraptions, and until they were done, I didn’t even know if they would work.” – Steve Moseley