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Gravity Bongs: Elevate your Smoking Experience

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A gravity bong, also known as a GB, is a homemade smoking device that uses the principles of gravity to create a unique and intense smoking experience. It is typically made out of two bottles, one of which is cut to fit inside the other and create a bowl for the marijuana. The larger bottle is filled with water and the smaller bottle is packed with weed. The top of the small bottle is then lit and the large bottle is slowly pulled out of the water, creating a vacuum that sucks smoke into the bottle. The user then inhales the smoke through the top of the large bottle.

In this article, we will go over the steps for making a gravity bong and give some tips for using it safely and effectively. Whether you are an experienced smoker looking for a new way to get high or a novice curious about this unique smoking method, this guide will provide you with everything you need to know.

Infographic on How to Make and Use a Gravity Bong
Infographic on How to Make and Use a Gravity Bong

Materials Needed to Make a Gravity Bong

In order to make a gravity bong, you will need the following materials:

  • A bottle to use as the chamber piece; glass bottles because smoking out of plastic for prolonged periods can be harmful. However, for one-time use, a two-litter plastic soda bottle is very popular and convenient.
  • A bucket or larger bottle that can hold the smaller bottle almost entirely submerged upright.
  • Tin foil or mesh screen
  • A drill or a hot needle to make a hole in the plastic bottles.
  • Scissors or a blade to cut the plastic bottle (if needed)
  • Tape or glue to seal the plastic bottles

You can find these materials at most home improvement stores, or you can also find them online at websites like Amazon. You can also use recycle plastic bottle you have at home.

Be aware that cutting and drilling plastic bottles may generate plastic dust which is toxic, so it is important to work in a well-ventilated area and to use a mask or respirator if possible.

It’s also important to note that some states or countries may have restrictions on the possession or use of certain smoking devices like gravity bong, please be sure to check your local laws and regulations before attempting to make one.

Materials for a Gravity Bong
Materials for a Gravity Bong

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Step-by-Step Instructions to Make a Gravity Bong

Making a gravity bong can be a bit tricky, but with these step-by-step instructions, you’ll be able to make your own gravity bong in no time.

Step 1: Gather your materials

Make sure you have all the necessary materials before you begin. You will need two bottles as listed above, aluminum foil or a bowl piece, a drill or a hot needle, scissors or a blade, and tape or glue.

Step 2: Cut off the bottom of the the small bottle

Using scissors or a blade, carefully cut the bottom off the small plastic bottle. Be sure to leave the cap on the top of the bottle.

Step 3: Make the bowl

Using a drill or a hot needle, make a hole in the center of the cap of the small bottle. The hole should be large enough to fit the aluminum foil or mesh screen, but not so large that the marijuana falls through. A Glass bowl piece can also be used if the hole is large enough. 

If there are any gaps around the edges of the bowl, use tape or glue to seal them. This will help prevent smoke from escaping and ensure a tighter pull when using the gravity bong.

Step 5: Fill the the larger bottle with water

Fill the bucket or container with water so that the chamber bottle is almost completely submerged when upright.

Then, insert the small bottle (bowl-side up) in to the water.

Step 6: Use the gravity bong

see detailed instructions below

Gravity Bong Side View
Gravity Bong Side View

How to Use a Gravity Bong

Now that you’ve made your own gravity bong, it’s time to learn how to use it properly. Here’s a step-by-step guide for getting the most out of your gravity bong experience:

Step 1: Fill the bowl

Pack your desired amount of cannabis into the bowl of the small bottle. Be sure to pack it tightly, but not too tightly, to ensure an even burn.

Leave the cap lightly screwed on – it will be removed to inhale the smoke!

Step 2: Light the bowl

With the smaller, chamber bottle submerged in the water, use a lighter or matches to light the cannabis in the bowl. As it burns, smoke will begin to fill the small bottle.

Step 3: Lift the bottle

Slowly lift the large bottle out of the water while inhaling through the top of the large bottle. As you lift the large bottle, the water level in the bottle will drop, creating a vacuum that pulls smoke into the bottle.

Step 5: Take the hit

When the large bottle is full of smoke, remove the small bottle from the large bottle and inhale the smoke from the large bottle. The hit can be very intense, so it’s important to inhale slowly and be prepared for a large amount of smoke.

Tips for Getting the Most out of your Gravity Bong

  • Use a fresh bowl of marijuana each time you use the gravity bong.
  • Start with small hits and work your way up to larger hits as you get used to the intensity of the smoke.
  • Use a stopwatch to time how long you should hold the large bottle out of the water to pull the smoke.
  • As with any smoking method, it’s important to use caution when using a gravity bong.
Gravity Bong in Use
Gravity Bong in Use

Gravity Bong Cleaning and Maintenance

Most Gravity Bongs are intended for single use, which is why many are made from cheap plastic and other disposable materials. However, if you have a glass bottle gravity bong, here are some basic tips to keep it clean:

  • Use clean water every time you smoke
  • Use a clean glass bowl or fresh foil every time
  • Clean the glass with isopropyl alcohol and hot water


In conclusion, a gravity bong is a unique and intense way to smoke marijuana. It uses the principles of gravity to pull smoke into the bottle, creating a powerful and satisfying hit.

One of the benefits of using a gravity bong is that it can be a more efficient way to consume marijuana, as it can create a very potent hit, allowing users to get the desired effects with less marijuana. Another benefit is that it is easy and cheap to make a gravity bong, as long as you have the right materials and follow the instructions properly.

In any case, whether you’re an experienced smoker looking for a new way to get high or a novice curious about this unique smoking method, it’s important to use caution and to follow the instructions properly.

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