202 lines
9.3 KiB
Plaintext
202 lines
9.3 KiB
Plaintext
Message-ID: <221412Z30111993@anon.penet.fi>
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Newsgroups: alt.drugs
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From: an53943@anon.penet.fi (Mary Jane)
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Date: Tue, 30 Nov 1993 22:08:58 UTC
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Subject: Gravity.Bong.FAQ
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Here is an article I hope readers feel is helpful, in response to all
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the discussion about gravity bongs, how they work, and how to make them...
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********************* BEGIN ARTICLE ********************
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THE GRAVITY BONG:
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I am a senior mechanical engineering student. My specialty is
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design and prototyping. I have worked for several companies
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learning how to prototype, and this comes in really handy for some
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of my "other" projects. Here is a pretty simple one...
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I was introduced to the gravity bong by a friend. He told me
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the full name as described to him was the "Afghanistan Gravity
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Bong". We were sitting around one night and decided to try one
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out.
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While I could go into detail concerning the mechanics of the
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bong's operation, I don't think that is really necessary. The
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reason it is called a "gravity bong" and not something else is
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this is what someone called it, that is how they described it to
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their friends, and now it is an accepted term for the following
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setup. I have observed some people on the net arguing about
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gravity vs. pressure vs. whatever. If you have comments like this
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as a result of this description, I refer you to:
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alt.engineering.geeks. The type of argument I have observed would
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have been halted a long time ago by declaring a "TECH TIME OUT !!"
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at our school. Take a hit man. I feel better now having said all
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that, so... on with the important stuff...
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GRAVITY BONG OPERATION:
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STEP 1:
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Place the bottomless bottle into a water source such as a
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bucket of water, sink, bathtub, larger bottle, fishtank (just
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kidding), etc...When the bottle rests on the bottom, the mouth
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piece should be above the water level enough to grip the bottle.
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I'm not sure if warm or cold water is best, or even if it makes
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much difference seeing as the smoke is not bubbled through it.
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STEP 2:
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Pack the bowl and place it on the mouth of the bottle.
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STEP 3:
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SLOWLY!! draw the bottle out of the water, while lighting the
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bowl. The herb should really burn and the smoke will look
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intimidating. Stop when: a)the herb is all ash (preferable), or
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b)when the bottom of the bottle is still an inch or so below the
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water level in the bucket. Begin preparing yourself for a huge
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hit.
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STEP 4:
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CAREFULLY remove the bowl without letting the bottle move
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downward (up a little is o.k., but don't lwt the bottom come out
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of the water), exhale deeply, and place your mouth over the
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opening. Inhale quickly and completely, allowing your head to
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move downward. Try not to drink any bong water as this kind of
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sucks! (although its like learning to swim, it's bound to happen a
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little).
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STEP 5:
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Don't cough and hang on tight!
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PACKED
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BOWL >> $$
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I I I\/I
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BOTTLE >> / \ BOTTLE >> / \
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/ \ / \
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| / \ | | / \ |
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|~~~~|~~~~~~~~~~|~~~~| |~~~~|~~~~~~~~~~|~~~~|
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|~~~~|~~~~~~~~~~|~~~~| |~~~~|~~~~~~~~~~|~~~~|
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|~~~~|~~WATER~~~|~~~~| |~~~~|~~WATER~~~|~~~~|
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|~~~~|~~~~~~~~~~|~~~~| |~~~~|~~~~~~~~~~|~~~~|
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|~~~~|~~~~~~~~~~|~~~~| |~~~~|~~~~~~~~~~|~~~~|
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\__________________/ \__________________/
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BUCKET BUCKET
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Step 1 Step 2
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\/ = BOWL
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% $$ = HERB
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LIGHTER __ *% ** = LIGHTER FLAME
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>> |__|@**
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$$ SUCK
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/\ I\/I ||
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|| / . .\ || I..I
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|| /. . . \ || /. . \
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|| /. . . . \ \/ /. . . \
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|. . . . . | /. . . . \
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BOTTLE >| SMOKE | |. . . . . |
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| . . . . .| | . . . . .|
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| |~~~~~~~~~~| | | |~~~~~~~~~~| |
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|~~~~|~~~~~~~~~~|~~~~| |~~~~|~~~~~~~~~~|~~~~|
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|~~~~~~~~~~~~~~~~~~~~| |~~~~|~~~~~~~~~~|~~~~|
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|~~~~~~~WATER~~~~~~~~| |~~~~~~~~BONG~~~~~~~~|
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|~~~~~~~~~~~~~~~~~~~~| |~~~~~~~~WATER~~~~~~~|
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|~~~~~~~~~~~~~~~~~~~~| |~~~~~~~~~~~~~~~~~~~~|
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\__________________/ \__________________/
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BUCKET BUCKET
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Step 3 Step 4
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THE DESIGN:
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FIRST TRIAL:
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First, a 2-liter bottle and a suitable bucket were obtained
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from the apartment. I cut the bottom off the 2-liter bottle and
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set it aside. I was able to find a couple of screw on caps, one
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of which was of the metal variety. I cut a rough hole in each,
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and glued them together, with the cup sides facing out. Into the
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side with the metal cap, a piece of screen was placed and fit real
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nice. We were forced to build this little thing because we didn't
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have a bowl handy.
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This worked o.k., but quite a bit of air flowed in for the
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quantity of herb which was consumed. Also, it was a pain to
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unscrew the cap after lifting the bottle. Overall, we all ended
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up having a great time and the first trial was still a success. I
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leave this historical description in here because: a)this may be a
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good enough system for you, or b)you are also in a pinch for
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something right away as we were!
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SECOND TRIAL:
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Having decided the activity was fun enough to warrant further
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development of the gravity bong, and having access to a machine
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shop, I designed a bowl just for this purpose. This incorporates
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a nice sized burn chamber (approximately = to 5 bat hits from a
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small bat), a small screen, and an o-ring seal to prevent air from
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passing anything but the burning herb. It drops out a pretty
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hefty ash after each hit.
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Here is a horizontal sketch of my gravity bowl design:
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FITS ___
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IN ____O| \ _______
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BOTTLE >> / \__________/ _____|
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| |+
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|-----------------------/ + << SCREEN
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HOLE >>>> |-----------------------\ +
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| __________ |+____
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\____ / \_______|
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O-RING >> O|___/ BURN
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CHAMBER
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You could make the dimensions to whatever you think may work
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best. I put a 1/4 in. hole through the bowl, with a 3/8 dia. burn
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chamber that is .400 in. deep. It fits nicely inside a 35mm film
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canister for storage and TRANSPORTATION to parties (no plans to
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build more, though several friends have already tried begging!).
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This new bowl works very well and burns quite efficienty,
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filling the bottle with dense smoke. The only change I have made
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to the apparatus is to offer the option of a milk jug in place of
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the 2-liter bottle, with a plastic adapter atached to the jug
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which makes the mouth the same size as a 2-liter bottle.
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I built my setup some time ago, but the other day someone on
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the net mentioned using a tuba mouthpiece. Not a bad idea. Also,
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people have said they used aluminum foil with holes poked in it.
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The point is to get a lot of burning done without using an overly
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large volume of air.
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TRIAL THREE:
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This has not been done yet, but the plan is to design a multi-
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user setup using a larger water bottle (like the Poland Springs).
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TIPS:
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To get really wacked, breath back into the bottle, allowing it to
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rise back up to the beginning of step 4, and inhale again. Do not
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however, deprive yourself of too much oxygen. I used this method
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and took a full minute to take the hit, breathing in and out, and
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was immediately wacked, staying that way for several hours from
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one hit!
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Have a "Gravity Party" with many friends - lotso fun!
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Some people like to push the bottle to the bottom, and then
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inhale. While this does act to push the smoke into your lungs
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(kind of like breathing in a balloon), I don't really feel it is
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any faster. If you try this, don't displace so much water that
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the bucket overflows.
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If it is your first time trying the system, do some trial runs
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without packing the bowl and lighting it. This is a must for a
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first time user from the point of view of risk reduction (won't
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chance losing precious smoke).
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********************* END ARTICLE ********************
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