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A gravity bong is a simple but effective smoking tool. Because it uses leftover containers and household tools, it costs nothing while allowing you to deeply inhale the smoke. Gravity bongs are easy to assemble for beginners and advanced users alike. To make a gravity bong in ten minutes, line a plastic cap with foil, cut the bottom off a plastic drink container, place it in water, then smoke by pulling the bottle up as you breathe in smoke.

Things You Should Know

  • Punch or drill a hole in the center of a plastic bottle cap. Put a layer of foil inside the bottle cap and poke holes in the foil with a pin or toothpick.
  • Cut the tops off of a 2-liter plastic bottle and a gallon milk jug. Fill the milk jug halfway with water.
  • Fill the foil-lined bottle cap with smokable material. Put the 2-liter bottle into the water and place the bottle cap on it.
  • Light the material in the cap as you slowly lift the bottle up so smoke fills the bottle. Then, unscrew the bottle cap and inhale the smoke.
Part 1
Part 1 of 3:

Creating the Bowl

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  1. Watermark wikiHow to Make a Gravity Bong in 10 Minutes
    Start by unscrewing the cap from a 2-liter or comparable plastic bottle such as a Gatorade bottle, milk bottle, or fruit juice bottle,. For this, you’ll need a hole punching tool, a drill, a knife, or scissors. Twist the implement until you screw a hole through the center of the cap. [1]
  2. Watermark wikiHow to Make a Gravity Bong in 10 Minutes
    Continue to cut away the inside of the plastic cap until the hole widens. Pinky-sized is an average size to shoot for. Larger holes will give you quicker draws but use up your smokeable faster. [2]
    • If you’re going to use a bowl piece, widen the hole until the bowl piece fits.
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  3. Watermark wikiHow to Make a Gravity Bong in 10 Minutes
    Rip off a piece that’s big enough to contain the cap. Include extra length so you have enough foil to use. Place the cap aside for a moment.
    • Instead of foil, use a socket for a socket wrench, a thimble, or another circular piece of metal that you can use to hold your smoking substance.
    • The danger from using foil is a common myth, but the foil does not release enough aluminum during smoking to cause harm to you.
  4. Watermark wikiHow to Make a Gravity Bong in 10 Minutes
    Use your finger as a guide. Hold your finger in the center of the foil, then carefully wrap the foil upwards and around your finger. The bowl will have the shape of your finger and fit inside the cap. [3]
  5. Watermark wikiHow to Make a Gravity Bong in 10 Minutes
    Pick up the cap and keep it top side up as you push the foil into cap’s hole.. Turn the stuck up ends of the foil down and smooth them against the plastic cap.
  6. Watermark wikiHow to Make a Gravity Bong in 10 Minutes
    Set the cap down and get a hole punching tool. A mechanical pencil or toothpick work well if you don’t have a tool from a hardware store. Poke a couple of holes on the part of the foil over the hole in the cap, about four to six to let enough smoke through. Scatter them about so the foil doesn’t break. If the holes are too big, your substance of choice will fall through.
    • While sockets and other metal can also use foil, you can line the inside of the socket with metal mesh to create a bowl.
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Part 2
Part 2 of 3:

Forming the Bong’s Body

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  1. Watermark wikiHow to Make a Gravity Bong in 10 Minutes
    Find the Gatorade or 2-liter bottle. Measure a quarter to halfway up the bottle. Using a knife or scissors, make a cut where you measured. Cut all the way around the bottle. This bottle will hold the smoke.
  2. Watermark wikiHow to Make a Gravity Bong in 10 Minutes
    A water or milk jug wider than the bottle you already cut works for this purpose. Measure down a quarter or halfway from the top, then cut the bottle the same way as you did the other one. [4]
    • Instead of a bottle, you can simply use a large container such as a bucket, coffee pot, pitcher, or stopped sink, You won’t have to cut these.
  3. Watermark wikiHow to Make a Gravity Bong in 10 Minutes
    Set the container down and fill it up with tap water. Limit the amount of water so that the container is only half-full. This amount will give you enough gravity to make the bong work without making a mess.
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Part 3
Part 3 of 3:

Using the Bong

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  1. Watermark wikiHow to Make a Gravity Bong in 10 Minutes
    Place your favorite legal smoking material on the foil inside the indentation you made earlier. Do this before you assemble the rest of the bong or else the pressure will make the smokeable fly out.
    • When picking up the cap, make sure your substance of choice isn’t falling through the holes in the foil.
  2. Watermark wikiHow to Make a Gravity Bong in 10 Minutes
    Pick up the top part of the Gatorade or 2-liter bottle you cut earlier and move it into the water. If your water container is big, you may need to hold onto it. Retrieve the cap with the bowl and screw it onto the bottle.
  3. Watermark wikiHow to Make a Gravity Bong in 10 Minutes
    Hold the bottle down as you ready your lighter. Light up your bowl. As you light it, slowly pull the bottle upwards with your other hand. You should notice milky smoke filling the bottle. Make sure you don’t pull the bottle out of the water.
  4. Watermark wikiHow to Make a Gravity Bong in 10 Minutes
    Once smoke has filled the bottle, it is ready for use. Unscrew the cap. To smoke, place your lips around the bottle and push down. The smoke will easily shoot out.
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      Tips

      • Gatorade bottles work better because they are thicker and more sturdy than a standard 2-liter bottle. Also, the cap is wider, allowing you to make a bigger bowl that is easier to use.
      • Instead of tin foil, you can use a socket or bowl piece for the bowl. Foil can change the taste of your substance and holds onto smells much longer.
      • If you find yourself burning your finger after lighting the bowl, poke a small hole high on the side of the bottle to use for sucking up smoke. Cover the hole with your finger as it fills with smoke.
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      Tips from our Readers

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      • You can also put a bigger hole in the foil and then put a pipe filter in the holes. That way the foil will protect the plastic cap and the pipe filter can take on the heat.
      • Using a cone piece (bowl) in the lid of the bottle may work better than foil. The metal of the bowl will absorb most of the heat and the plastic wont burn.
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      Warnings

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      Things You'll Need

      • 2-liter bottle or comparable plastic bottle
      • Jug, bucket, or other large water-holding container
      • Knife or scissors
      • Hole making tool (pencil, toothpick, etc.)
      • Aluminum foil or socket
      • Water
      • Lighter, matches, or soldering iron
      • Tobacco or herbs

      About This Article

      Article Summary X

      If you want to make a gravity bong in 10 minutes, start by making a pinky-sized hole in the cap of a 2-liter plastic bottle using a hole punching tool, like a drill or knife. Then, tear off a square of aluminum foil and use it to cover the cap completely, which you can do by pushing the foil through the cap's hole with your finger. To complete your bowl, locate the hole in the cap, which should be covered in foil, and poke a few small holes into it. Next, form the body of the bong by cutting a tall bottle in half and filling the bottom part halfway with tap water. When you're ready to smoke, place the top half of the bottle into the water, then load your cap and screw it onto the bottle. For more advice, like how to use a gravity bong, scroll down!

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