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