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This ancient technology makes things spin really fast

A demonstration of an ancient device reveals how simple physics can create extremely fast spinning motion, showing that ...
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Building a shop-made rolling tool

See how a custom rolling tool is designed and built in the workshop to solve a practical machining need. Why build your own ...

Samsung microSD Card Drops to $0.13 per GB Record Low, Practically Free Storage Upgrade for Nintendo Switch, Steam Deck, and More

Give your Switch 2 or Steam Deck a massive infusion of storage space and save 40% off the price of the Samsung P9 Express microSD card.