If you can turn a wrench and operate an electric drill, you can build this simple generator in two days. Turn a car alternator into a homemade wind turbine by building this cheap and easy DIY wind ...

Hydrogen! It’s a highly flammable gas that seems way too cool to be easy to come by. And yet, it’s actually trivial to make it out of water if you know how. [Maciej Nowak] has shown us how to do just ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Think about what you plan on using your generator for, as well as where you’ll be ...