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