A Screw That Can Be Tightened In Either Direction

In this video I talk about how screws work (simple machine) and show you a screw that can be tightened in the clockwise or the counter clockwise direction!

STL file for two way screw: https://www.thingiverse.com/thing:469...

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*Any experiment you try is at YOUR OWN RISK. The Action Lab assumes no responsibility for any injury if you attempt anything you see in this video or on The Action Lab channel.