Why are cross-head screws deliberately designed to be so difficult to use?

Animation simulates the bodily changes that occur during pregnancy

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Why does a small car have to pull a big car?

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“Jealousy Can Completely Transform a Person”

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Amazing tool, so creative

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Hilarious finger creative painting, fingertips draw a little life!

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[Uncle Qiu Takes a Look] The video has been packaged—welcome to check it out!

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Liebherr Excavator R9800

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10 very interesting inventions and tricks, come and see if they work!!!

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Build micro-hydro on creeks with powerful device

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Handcraft|Making Handmade Soap

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I made an electric wheelchair for my grandma.

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Make a Roubo Woodworking Table

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Far more than the average family car? A palm-sized inline four! The whole process of assembly!

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Speed bump!! Amazing machinery~

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The Coolest Speed Bump Mechanism Ever!

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Today's super cool mechanical gadgets from Mechanical Punk!

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Handcraft: Making a Jewelry Headwear

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Foreigner Hardcore Crafts: DIY Corpse Bride Doll

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Introduction to Traditional Group Farming Culture in Africa

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The Irresistible Mechanics of the “Men’s Speed Bump”

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