Mark Rober's CrunchLabs · SEASON 3
Building a Liquid Sand Hot Tub
Episode 3 · 2026-03-16
- Family
- Documentary
Episode overview
With the right amount of forced air, a hot tub filled with sand can look like a bubbling pot of soup. But how? Mark breaks down the science behind it.
9 minutes
Season 3 episodes
1. Lava vs Laser Destruction Test2026-03-16
2. Backyard Squirrel 2.0 - Bank Heist2026-03-16
3. Building a Liquid Sand Hot Tub2026-03-16
4. This Ball Is Impossible to Hit2026-03-16
5. Vortex Cannon vs Drone2026-03-16
6. Glitter Bomb 1.0 vs Porch Pirates2026-03-16
7. Engineers vs Food Robots2026-03-16
8. Mark Rober vs Ninja Kidz2026-03-16
9. Engineers vs Custom Go Kart Racing2026-03-16
10. Episode 10
