Soft drink bottle caps

These are soft drink bottle caps modeled according to the PCO1810/PCO28 specification of the International Society of Beverage Technologists (ISBT).

* http://imajeenyus.com/mechanical/20120508_bottle_top_threads/index.shtml
* http://www.threadspecs.com/threadspecs-downloads.asp

Note, this is for an irrigation project and I would not let food come in contact with this when printed with non-food-safe materials such as the resin I'm using.