SodaStream-compatible Bottle Interface Reference Parts

I've carefully measured and modelled the bottle interface used on regular plastic bottles supplied under the SodaStream brand of home carbonators. I've included a faithful recreation of the head of the SodaStream brand bottles in the file "SodaStream Plastic Bottle Interface (Universal)", with a small modification that adds a curve to the base. if you print it facing down, you can print without supports without any difficult overhangs!

I've also included a version called "Grabber Mount". This