It’s an automatic parachute deployment system that you build into the nose-cone of your rocket. The main portion of the build is made out of plastic soda bottles (2 liter size) to end up with a ...

This water rocket launcher lets you do ... If you’ve already got a compressor and some empty 2-liter bottles you might also pick up some extra PVC to make this pressurized water cannon.

Download the Water bottle Rockets PDF ... to hold pressure inside it. Making a hole through the cork using a drill, punch or awl is a job for an adult. The rocket launches with little or no ...