SodaSparkle_Bottle_Shell_Light

This is the SodaSparkle Light bottle bottom shell. SodaSparkle is a device to adding carbonation to water, like SodaStream. This idea has been around for over 100 years, and the carbonated water was traditionally called Seltzer Water. After 3 years, in this case, of reusing these bottles, the bottom shell of two of my SodaSparkle Light bottles cracked and broke while I was adding CO2 to the water in the bottle. The bottle expands as you add CO2 to the water. Here is a new bottom shell for the SodaSparkle Light bottle. You can re-size this to fit the smaller SodaStream bottles.

This is simply the outside bottom shell for SodaSparkle Light bottles.
It is not the entire bottle.
(The format cutter here cropped my photos here in a way that I had not expected. but I hope that you get the idea.)

No support needed.