Building this launcher is simple if you already have a mill. It does a remarkable job of pressurizing and launching soda bottles which are partially filled with water. The main component of this ...

Build and launch a rocket powered by a chemical reaction between baking soda and vinegar! This exciting experiment demonstrates how chemical reactions can create pressure, and how that pressure can be ...

This piece of engineering is so simple and elegant, you’ll want to build a pretty serious water rocket just so you can try it out. It’s an automatic parachute deployment system that you build ...