자연 | Primitive Technology: Cord drill and Pump drill
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작성자 최고관리자 작성일16-09-18 14:47 조회3,985회 댓글0건관련링크
https://www.youtube.com/watch?v=ZEl-Y1NvBVI
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Primitive Technology: 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 ...
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