What would be the effect of removing the iron branch in the bicycle tire and replacing it with a sho

Build a rubber band machine gun out of corrugated paper and hold up to 120 rubber bands!

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The most creative safe in the world: a lock with a magnet!

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

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Just how impenetrable is this armor made of 1500 coins?

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Cyber bike

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[Handiwork] Putting Formula 1 Tires On An Electric Scooter

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Two-wheel-drive bike, hand-assembled!

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1/3 tire + 1/3 tire + 1/3 tire = 1 tire

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Half tire + half tire = one tire

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Lighten your toolbox! A real man's must-size adjustable wrench!

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DIY Bike | Airless Tires

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The handsome origami mechanical triangle dart that takes off! It is recommended that boys have one

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On the first day of learning about velvet flowers, I crafted a dandelion.

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[DIY] Advanced Coin Sorting Machine

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fun magnetic game

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From entry to prison

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Don't throw away the crab shells after eating, add some parts, the straight man of steel is crying

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These inventions are too "criminal", I really don't poke

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[DIY] Making A Crocodile Dentist Game At Home

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Make a cute little train and use corrugated paper to make small steerable rails!

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