Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:3009978.

PET bottle adapter for Fizzini / Sodastation handheld sparkling water maker.

I just wanted the option to use a 1-liter soda bottle instead of the regular bottles.

Special thanks to sirmiro for the "PET Bottle Cap for projects" found here: http://www.thingiverse.com/thing:2167007 I believe I'm using his project as intended! It saved a LOT of time. This way, I didn't have to design in Fusion360 - this was all designed in 3D Builder!

The cap as-is fit my bottle well, but it there was slight wiggle-room in the threads that caused the 1st prototype to not hold pressure well enough. So, by V6, I made it juuuussssttt a few millimeters smaller in the x and y axis.

It works pretty well with or without the gasket - not sure which I prefer. With the gasket it holds pressure a bit longer....but it's a bit scary, but the pressure does dissapate :)

.stl files include the adapter and an optional gasket.

So far, it makes seltzer!