Everything you need to know to make your knives razor sharp again.

A pocket knife sharpener is a great tool for putting a razor edge on your knives when you’re out in the field. It sounds almost counter-intuitive, but a sharp knife is safer than a dull one. If you ...

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POP Projects is a collection of new and classic projects from more than a century of Popular Mechanics. Master skills, get tool recommendations, and, most importantly, build something of your very own ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...