My DIY Submarine Dives As Deep As Possible (PT2)
13:19
Our DIY Sub Explores A Flooded Hole To MAX DEPTH (PT3)
15:06
How I Built the NEW World’s Fastest Drone
33:26
Building a Supersonic Rocket Guidance System
27:00
Building ultimate vehicle for hunting shipwrecks
24:08
Testing 8 Innovative New Boat Propeller Designs
21:32
Amazing Invention- This Drone Will Change Everything
21:04
I Built a Go-Kart for Abandoned Railroads *Again*
29:27