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

Hide now, or Lego will be banned

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Cyber bike

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

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

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You must ride your bike! Yes, it has no handlebars!

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The modern version of the blood droplet, the foreign ruthless man puts a blade on the motor, and whe

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

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Two-wheel-drive bike, hand-assembled!

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Homemade fast roller skates started with an electric screwdriver!

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A V8 powered by an electric screwdriver! Fully handcrafted model with gas pedal!

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

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Stringing rice beads is so simple. String rice beads with your eyes closed.

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

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[Crafting] New concept bikes without a chain

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Professional performance test

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Today is another very "punishment" day, da da da

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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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Will adding a track to the balance car be like walking on the ground?

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

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