This pokeflask will help catch the beverage of your choice. Holds about 200mL, or 7 fl. oz.
You will need 1 cap, 3 pegs, and 2 each of the shell, ring, and binder. 2 versions of the central ring are provided--with or without a loop for clipping/hanging the flask. You will also need a collapsible plastic bottle. See instructions below!
To complete the flask you will need a "Cruise Flask" brand collapsible plastic bottle. Other brands may work if they have the same spigot. I used a 16oz bottle and used a clothes iron to reduce the size and create a more compact shape. See the pics.
Push the pegs into the 3 holes on the center rings, and check to see that everything fits together before gluing. You may need to sand a little.
I used CA (superglue-type) glue. First assemble each half (shell, ring, and binder). Take extra care to make sure the binder piece is placed so that the flat part is flush with the ring surface. Also glue the printed cap piece to the top of the twist cap. Final step is to get the plastic pouch in place and glue the the 2 halves together.
Designed in Fusion 360. I borrowed design ideas from http://www.thingiverse.com/thing:411193, but made the files "from scratch." This is my 1st design posted to MyMiniFactory. My thingiverse profile: http://www.thingiverse.com/MHypothetical