Primitive Technology: Cord drill and Pump drill
Primitive Technology · 3 则 HN 推荐
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Primitive Technology shows building a cord drill from scratch and then upgrading it to a pump drill, using only primitive materials like a stone flywheel and cord.
HN 推荐的原因： HN people link it as a satisfying demonstration of hand-powered drills being made from nothing.
“If you're interested in seeing someone make these take a look at this Primitive Technology video” 阅读 HN 讨论 ↗