It’s a three-dimensional persistence-of-vision (POV) masterpiece, but as a collection of rapidly spinning metal elements, it’s potentially quite dangerous as well. As [Sean] demonstrates ...

Metal spinning is a manufacturing process used to create symmetrical parts from metal sheets or tubes by rotating them against a tool. This technique is particularly useful for producing thin ...

Cable spinning began in October 1935 ... To spin the cables, 80,000 miles of steel wire less than 0.196 inch in diameter were bound in 1,600-pound spools and attached to the bridge's anchorages.