Due to the decreasing diameter towards the bottom of the SodaStream bottle https://sodastream.com/products/glass-carafe it tends to tilt over, for example when you have them stored in the fridge door and you open or close too quickly. With this stand, you can keep them safely in place.

To get this robust with a small amount of material I decided on a few flat prints that you would stick together after printing. Due to the design, they should stick together well without extra glue by tension. My model is without any additional tolerances since my printer typically produces very good results. For this print, I only had to clean up the very small hole on the upper ring plate to get a perfect fit for everything.

For those that want to change tolerances, the thickness of the plates, or the number of bottles to store feel free to customize the attached parameterized OpenSCAD model.

Printing parameters shouldn't matter much for this print as long as you get your printer to be precise. I personally printed with 0.4mm nozzle and 0.2mm layer height with PETG.