The EZ-Launch bottle rocket launcher has an internal spring loaded release mechanism. that allows the user to lock the 2 liter bottle in place during the fill up phase and release the bottle with ...

Such projects always hold the potential for entertainingly over-the-top designs, materials ... with the flange on the necks of 2-liter soda bottles. Honestly, the prototype was pretty good ...

This water rocket launcher lets you do just that ... 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 ...