Bottle rocket launcher interface

thingiverse

I had to try my own solution after printing some of the available designs from Thingiverse, so I came up with the Bottle Launcher System based on the "gardena" interface. The system can be combined with all gardena derivatives that screw onto a standard soda bottle interface. In my case, I used this great solution: https://www.thingiverse.com/thing:781367 I attached the conversion nozzle to the plastic nozzle at the bottom, and it has a built-in non-return valve. When you've finished building the system, be sure to build up pressure in the bottle carefully. All parts are made of plastic and aren't as strong as brass components. But I haven't experienced any failures even after pumping 15-20 times with a hand-operated Dutch bicycle pump.