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Roy Underhill shows how to use an 1889 foot-driven metal working lathe. Make your own darn metal screws with this 1889 foot-powered lathe! Roy shows how to cut perfect threads, cones and tapers in ...

It’s easy to cut bolts and small machine screws to length. On the other hand, there isn’t any job so small or simple that it can’t be done wrong, and this is a classic example. Get it right, and you ...

Freedom Kits, each for an application-specific material group, include 10 ground, polished, and coated Mil-Tec inserts, a Freedom Cutter body, screws, wrenches, antiseize, and a technical data sheet.

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...

Even if you aren't the handiest person in the world, you've probably encountered a stripped screw or two in your time. They are a common enemy of the home do-it-yourselfer and can throw a wrench in ...

It’s not news that Leonardo DaVinci was somewhat ahead of his time, and over the centuries many of the creations in his sketchbooks have been created and proved quite functional. The guys from the ...