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Published 2 years ago with 2 Comments

Cord drill and Pump drill

I made a cord drill and then upgraded it to a pump drill. A cord drill is basically a spindle with a fly wheel attached so it looks like a spinning top. the middle of a piece of cord is then put into a notch at the top of the spindle. The ends of the cord are then wrapped around the spindle and then pulled quickly outwards causing the drill to spin. The momentum of the fly wheel causes...

 

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  • CatLady
    +4

    My son introduced me to this series of videos and they are absolutely fascinating. If you enjoyed watching this one then I highly recommend you watch the others.

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