Just finished building my 40W(!!!) laser shotgun!!! The output of this laser is complete insanity, and is made up of 8 parallel 5W laser beams totaling to 40...

Hackett shows you how to build a bike charger for a deep cycle battery so you can power your life during the next natural disaster.Mike Davis' 555 chip charg...

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Hackett relies on his ingenuity to turn spring steel into an edged blade.

Electrical work wasn't my expertise, so I had to teach myself how to build circuits from the ground up. I'm now on version three of my two-port USB generator, which is about 70 percent efficient above 12 mph and creates less drag on bike wheels than other designs. With the right equipment, you can build one yourself.

In November 2014, the Leonid meteor shower will streak across the sky, peaking on the 17th and 18th. You could watch it. Or you could listen to it

Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.

You don’t need a fancy machine, or even ears, to listen to old records. Simply build a bone-conducting phonograph from cheap everyday objects.

Ed Lenz's house is pretty hard to miss-it's the one with a home-built vertical-axis wind turbine on the roof. A career tinkerer, Lenz put the turbine up there for a test run three years ago, and it's still turning away today, a super-quiet model of efficiency and ingenuity. The "Lenz2" turbine, built primarily from easy-to-find supplies like aluminum, plywood and magnets, can produce about 50 kilowatt-hours of electricity per month with steady wind. Its output-about 10 percent of the total…

A little DIY distilling

digg_url = 'http://digg.com/general_sciences/Fun_Pocket_Theremin'; Even if you're not familiar with the Theremin itself, it's very likely you've heard its loopy electronic tones before. Remember those spooky sound tracks from 1950s science fiction movies? Well, chances are pretty good that those oscillating noises were generated by a Theremin. Designed by Russian physicist Leon Theremin circa 1919, the two-handed instrument was one of the first ever electronic musical instruments and the…

The dead shall shine again

Stick it to the man

The awesome Craig Smith is at it again. He continues to explore the venerable crystal radio, now focusing on miniaturization. And that, of course, means on

Few things say autumn more than fresh apple cider. So what if you could make your own from your backyard. That’s what Instructables user Mike Craghead and his friend John Saveliff set out to accomplish. And the execution of this DIY project is absolutely genius! Want to make your own? Read on to learn from Mike […]

In which your old VCR is repurposed as something useful