13:11

Making A Billion-Year Lego Clock

9:26

Can you 3D Print a Mechanical Clock?

10:53

I Made a Fully Functional LEGO RUBIK'S CUBE!! (3x3x3)

13:35

Making a Working LEGO Pendulum Clock !!

10:39

The Most Ingenious Lego Machines That REALLY Work

19:00

Creating a LEGO-compatible brick that doesn't exist

20:51

New to Lego Gears, Watch THIS !!

8:17

Building a LEGO Pneumatic Engine with Variable Valve Timing