GBC Marble Run-Planetary Elevator 70164

The mechanism looks intimidating in the product photos, yet the manual breaks it down into totally manageable steps. Even the gear chains with their tiny axles were presented so clearly that I never once had to redo a section.

Watching the cam lift engage and release the marbles helped my daughter visualize concepts she’d only seen in textbooks. It’s a fun physics lesson in motion.

After finishing, I swapped some colors and built a little marble return ramp. The modularity makes custom tweaks easy and fun.

I love that spare small gears and a couple extra marbles were included. Losing a tiny piece won’t ruin the day.

Bright accent parts draw your eye to the gear motion, helping observers understand what’s happening mechanically.