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- Newsgroups: alt.drugs
- From: an9383@anon.penet.fi
- Subject: Bongineering
- Message-ID: <1993Apr6.080548.28107@fuug.fi>
- Date: Tue, 6 Apr 1993 08:03:09 GMT
-
- This past weekend, some friends and I undertook a "bongineering" project.
-
- We designed and built a "hookah" -- a multi-user water bong.
-
- Since the result was very sucessful, I've decided to post the design in
- hope that fellow travelers will benefit....
-
- Here is an ASCII schematic of the basic design:
-
-
- to user to user
- || bowl ||
- || | | ||
- || \ / ||
- |-++-| |-++-| |-++-|
- / || \ / || \ / || \
- / || \ / || \ / || \
- / \ / || \ / \
- | _____|___________| || |___________|____ |
- | / ________________ || _______________ \ |
- | |/ | tubing | || | tubing | \ | |
- |----||----| | || | |----||----|
- | || | | || | | || |
- | || | | || | | || |
- | || | |----||----| | || | d2
- | || | | || | | || |
- | || | | || | d1 | || |
- | || | | || | | || |
- \________/ \________/ \________/
-
- secondary primary secondary
-
-
- d1 = water depth in main chamber (may be Zero)
- d2 = water depth in secondary chambers (d2 > d1)
-
- This design requires no stoppers or valves -- it uses water pressure
- differences to effect a one-way valve. The main requirement is that
- the water levels in the secondary chambers are higher than the water
- level in the primary chamber. This allows the bong to work even
- without every "service station" occupied!
-
- Starting from this basic design, we actually built an slighlty
- enhanced version. It had a total of 4 service stations (i.e. 4
- secondary chambers), as well as well as an extra buffer chamber
- between the primary chamber and each secondary chamber. This beast
- had a total of 9 2-liter bottles arranged in a diamond pattern! The tubes
- from the primary chambers to the buffer chambers to the secondary chambers
- were very short, but the tubes from the the secondary chambers to the users
- were very long (4 to 6 feet). This allows for mobile or remote operation.
-
-
- Hints:
-
- 1) Use large-diameter (3/8 inch internal), (clear) plastic tubing.
- This reduces air resistance and makes sucking easier.
-
- 2) To make the holes in the bottles for the tubing, the following
- procedure worked well for us:
- Use a hot pointed object to first melt a small hole in the plastic bottles.
- (A very small phillips screwdriver held under a lighter for a few
- seconds works great.)
- Slowly twist a screwdriver/drill/pliers/knife to gradually increase
- the diameter of the hole. Stop when the diameter of the hole is
- slightly less than the outer-diameter of the tubing. This will allow an
- air-tight seal.
-
- This same technique works for making the holes in the top of the
- plastic bottle-caps.
-
- 3) If possible, use even larger tubing for the bowl tube in the
- primary chamber. This tube is the primary "bottleneck" for
- entering smoke, and the bigger this is, the easier it is to suck.
-
-
- The results were fantastic. At first, the users didn't think they
- were getting anything, since the smoke was greatly cooled by the dual
- water chambers. As a result, they sucked even harder.... A few
- minutes later, they were orbiting Pluto... :-)
-
- This was definetly a big hit (no pun intended :) with everyone...
-
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