Part of that is probably because we’ve gotten so good at making them that they’re seen as cheap commodities, but the physics and engineering behind the screw thread is interesting stuff.

The wood screws were bronze or silver. They made the threads by filing them, or by soldering on a wire wound in a spiral. But the screw was lost with the fall of the Roman Empire. The first ...

Watch the amazing transformation of rusty bolts into high-quality thread drill tools. Skilled craftsmen carefully cut, shape, and refine these discarded metal pieces into precision tools used for ...