How powerful can an air pressure machine gun with a firing rate of 1200 be made from a Coke bottle?

Two-wheel-drive bike, hand-assembled!

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spooky creativity

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Homemade Shotgun

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Cyber bike

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Isn't this a perpetual motion machine?

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How to ride this bike that bends over?

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A car powered by CO2 VS a pressurized Coke can, who is faster?

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Children's toys: use rainbow candies to bathe the baby

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The local tyrant sword made by myself... is a bit powerful

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cave car

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Full of life experience, let you avoid 30 years of detours!

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This machine engraving is no worse than manual carving! How much can you score?

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How to Make a Bat Boomerang With a Piece of Paper

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New concept unicycle !!!

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【Life】Making fidget spinner from bicycle chain.

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