fire death machine - i made a rocket
14:31
200 Watt car mounted laser!
15:51
Eu Construí o Primeiro Motor de Foguete Com Fluxo Laminar
17:33
Primeira olhada no meu design secreto de impressora 3D Cross Gantry!
28:06
I Tested the World's Most Extreme Crossbows
16:37
Fazendo uma prensa de gelo
13:08
This Is Why You Need To Wear Safety Glasses
21:56
Turning 50lbs of Copper Wire into a Bronze Guitar
13:55