Water rocket launcher

How to assemble?

For the big one, you'll need 36 M3x20mm screws and nuts. For the small base only 18. The launch rope, which has a length of about 10 meters, is to be attached to the pull adapter. I used zip-ties for this.

How to launch?

1.Install the launch system like shown in the picture below.

2.Click your rocket onto the launch pad.

3.Build up pressure until the rocket is 1/3 filled with water.

4.Close the valve stop and increase pressure.

5.Pull the launch rope and watch your rocket lift-off

Print instructions

This is a water rocket launch base based on Gardena. I designed a small and a big set. You should be able to fit the small one on a 18x18cm printer like the Prusa Mini and the big one on a 30x30cm printer. The big launch base is better for large rockets (more than one bottle) but also heavier and longer to print.