Building Cord Arill And Pump Drill Using Primitive Technology
Friday, September 4, 2020
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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. source/image(PrtSc):
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