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Water Rocket (Bottle Rocket) Adapter by kludgemonkey is licensed under the Attribution - Share Alike - Creative Commons license.
© 2011 by kludgemonkey
Instructions
First thing's first, this thing is for informational purposes only. Any maker that chooses to build it and use it for anything other than a paperweight assumes full responsibility for their actions and any death dismemberment or broken windows that result. Furthermore, this should never ever be used without adult supervision so for all of you young makers out there, don't blow yourselves up unless there is an adult around to blame.
If you fail to use it as a paperweight, DO NOT pressurize it over 120 PSI
The quick disconnect I used is this item:
homedepot.com/h_d1/N-5yc1v/R-100053927/h_d2/ProductDisplay?langId=-1&storeId=10051&catalogId=10053
But you can certainly find the same part online or at your local hardware store.
The hole for it to thread into is 0.54" diameter with a thread pitch of 0.05556" (18 threads per inch)
After printing, apply teflon tape to both the bottle threads and the 1/4" NPT quick disconnect before screwing into the adapter. I screwed it together cold, it might work better to screw it together hot.
I designed this to print the threads so that the resultant part would be ready to use without further machining, the threads on the disconnect side are very tight and I had to use a wrench to force it in (again, it was cold)
