Compound bows (unlike recurve bows, their more mechanically-simple relatives) use a levering system with pulleys and spring tension to grant the user a mechanical advantage. We’re not exactly sure ...

The science experimenters at TKOR construct a rugged and functional crossbow using PVC pipes as the primary structural ...

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For more than a century, Popular Mechanics has provided life-saving advice for outlasting storms, surviving outdoors, and preparing for disaster. Find out how to survive anything right here. Primitive ...