Thought it might be interesting to design a water pipe around a soda can. The can should only be filled with an inch or two of water so the secondary intake is
...さらに表示 above the water line for clearing smoke.
Requires that you get a bowl and downstem or make one possibly out of aluminum foil.
Print the main file with support and it should fit a standard wide-mouth US soda can. Print one of the mouthpieces as well choosing a simple 16mm OD pipe or the widemouth which is more like the diameter of standard glass bongs.
Note: The image for the main part looks like there's an extra plane in the chamber above (below in the image) the soda can top but it prints fine.
Update: Just replaced the main file with v2 that adds a larger carb pipe and a funnel shape for the bowl acceptor.
New! Just posted the (Plastic Beverage Bottle Bong)[http://www.thingiverse.com/thing:636414] which can use the same mouthpiece, is a quicker print, with better air tightness, and lets you see the smoke in the bottle.
