How to Make a Homemade Gravity Bong (Out of a Bottle)
If you ever needed evidence that stoner culture has become mainstream, look no further than commercially manufactured gravity bongs. While the smelly, maybe toxic dorm room staple has made its way into the world of corporate glass, real ones can still make one at home very easily.
DIY: How to Smoke Weed Out of a Water Bottle
Sometimes you find yourself in the mood to skip the joint and smoke from a bong, but what happens if you don’t have a bong lying around? Luckily, you don’t need to have a glass bong at all times with you when you want a big puff. The cannabis community is creative enough and has found numerous ways to smoke some fragrant nugs, even without rolling papers.
Sometimes all you need is a plastic water bottle. It can actually be repurposed and made into a bong in more ways than one. Next time you’re out camping and you have a hankering, try the following method to make yourself a homemade bong. Let’s go!
Not only are they cheap and easy to make, but they’ll also get you absolutely ripped. High school high.

There are a few different ways to make a “geeb.” This one seems to be one of the lesser-known variations but it’s the easiest to make, easiest to clean up, and easiest to hide under the kitchen sink.
Here’s how to make one.
The Stuff You Need to Make a Bong Out of a Bottle

- A plastic beverage bottle. Any will do.
- Sharp knife
- Lighter
- Aluminum foil (but preferably just a slide from a bong)
- Something to poke with
1. Make the Bowl Piece
First, a note:
Yes, inhaling aluminum fumes is not ideal. Using a plastic bottle probably isn’t great either. Both have been shown to have some negative health effects. Use a glass bowl piece if you can. If not, don’t stress it too much. Unless this is your main mode of inhaling cannabis, you probably don’t have anything to worry about. Plus, YOLO!
If you’re using a bowl piece, go ahead and skip to step two.
Fashion your aluminum foil into a bowl piece. Use something skinny to wrap the foil around to make the downspout and then spread it out to make a nice resting place for your pot.
2. Fashion the bowl piece assembly
This step is where you’re most likely going to injure yourself. Do this sober, unless you’re one of those people that just does everything better when you’re stoned.
Use your knife to pop a hole in the cap of your beverage bottle.

Then, use the lighter to make the hole wider until your bowlpiece’s downspout fits through snugly.

You can use some of the melted plastic to properly seat the bowl and form a seal. It’s fine.

3. Make a carb hole
A carburetor, or carb, is a hole in a pipe that helps you pull air through the pipe and into your lungs. It’s otherwise known as that thing baby smokers forget to hold or let go of, depending on experience.
Simply poke a hole in the side of your bottle near the bottom and widen it a bit with the lighter.

The bigger the hole, the faster you’ll be able to pull smoke through. Just make sure it’s in a comfortable place for your finger or thumb and that you can cover it easily.
4. Pack up your gravity bong
While the cap/bowl piece assembly for your gravity bong is off of the bottle, pack that shit up with cannabis. Don’t screw it on yet.
5. Fill the bottle
With your finger over the carb, fill the bottle up with water. Then, screw the cap back on without releasing your finger.

6. Let the magic happen
Hold your gravity bong over a sink. Put a flame to your bowl and release your finger from the carb.

As the water drains out it will pull air through the bowl piece and fill the bottle with smoke.

Once all the water has drained, exhale deeply. Then, take the hit that is rightfully yours.
Cough endlessly, repeat.
**For extra nostalgia, get one of your friends to pound on your door like a suspicious RA and then scramble as you try to hide your gravity bong and cover the smell.
Are Gravity Bongs Bad for You?
Smoking of any type has negative effects but smoking from a gravity bong, assuming you’re referring to the simple homemade kind typically using a plastic bottle and metal socket, has much more adverse side effects than regular smoking or smoking through the glass. They get you super high without using a ton of weed.
With each hit, you take in a large amount of heavily concentrated smoke, which is forced into the lungs. If you’re a seasoned smoker, you might find that the hits are nice and smooth. However, a newbie who isn’t used to taking large strokes will likely experience a lot of coughing.
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