Rabbit Water Bottle Adapter

This thing allows you to use a larger water container (whatever you choose) as long as you can put female 1/2 NPT (pipe thread) on it. Adapts 1/2 NPT to "soda bottle" threads like a 2 liter bottle has.
This object is a remix (combination) of 1/2" .5" NPT plug (http://www.thingiverse.com/thing:210455) and thread creation exercise (http://www.thingiverse.com/thing:333670).
It prints both with and without support on my reprap. Without support and brim was my best result.