17:58

Making a BOLT ACTION Pen || INHERITANCE MACHINING

12:29

I made a bolt with MAZE threads - Don't strip these threads! - Can you solve the puzzle?

12:01

This Tiny Engine Growls like a Beast (assembly & test run)

17:57

Gearless Magnet Bike

23:41

Making a Pocket Hydraulic Car Jack

17:54

Inside Look ：The High Speed Assembly of Electric Jack Hammers in a Chinese Factory

27:55

I built an Omni-Directional Ball-Wheeled Bike

19:00

Creating a LEGO-compatible brick that doesn't exist