Modular SodaStream Bottle Storage

This is a modular Soda Stream plastic bottle storage system.
I looked for something to store my sodastream bottles underneath something in a nice way. However most of the designs didn't suit what I wanted or were full bottle length.
I wanted to achieve several things with this design.
1) Minimise wastage of fillament/plastic.
2) Modular to suit whatever space was available

So There are 5 STL files available
The Ring which is the front and back piece of the design
The Rod of which there are 3 types. The rod's purpose is to join front and back together and provide horizontal support and some vertical support for bottles as they slide in and out. Double Rod is for joining side to side or top to bottom of the rings. Single rod is for at the edges of the entire structure. I also did a base support rod (I have not tested this one) for printing as a base with a bit of extra width to help stabilise a single column structure (If this doesn't work let me know)
There is also a Joiner