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make a waterfall bong

Make a waterfall bong

Light Your Herb (Photo by: Gina Coleman/Weedmaps)

With the bottle now full of smoke, remove the downstem and bowl and place your mouth over the bottle opening. Gently and slowly push the bottle back down into the water. This will force the smoke up out of the bottle and into your lungs. If you don’t want to clear the entire bottle at once, continue holding it in the water and put the downstem/bowl back on top to trap the smoke.
Prepare the Bowl (Photo by: Gina Coleman/Weedmaps)

As with the bucket bong version, you have two options to create a bowl for your gravity bong. To use an actual downstem and bowl, you will need to drill a hole into the lid of your plastic bottle. Press the downstem into this hole then slide the bowl into the downstem. Again, the hole you drill into the lid should be almost the exact same diameter as your downstem to keep things airtight.
IMPORTANT: DO NOT LIFT THE BOTTLE ALL THE WAY OUT OF THE WATER OR YOU’LL LOSE ALL YOUR SMOKE!
Make the Bong (Photo by: Gina Coleman/Weedmaps)
Fill a Bucket With Water (Photo by: Gina Coleman/Weedmaps)

  • Empty plastic bottle
  • Scissors or box cutter
  • Downstem and bowl, or alternatively, aluminum foil
  • Water

You’re almost ready to spark up and take your first hit. Start the process by packing your bowl with a pinch of ground-up cannabis. Next, hold the gravity bong in one hand and gently push it down into the water.

How to Make a Gravity Bong A gravity bong can be an excellent smoking choice whether you’re in a pinch and need a makeshift way to smoke or if you simply want to mix up your typical smoking

Make a waterfall bong

Wrap the cap in aluminum foil, shaping the foil to create a small “bowl” divot for your cannabis. You can shape the bowl to be as deep as you’d like, and the foil will keep your cannabis from falling into the water below. You may need to cut off excess foil and shape it to avoid spilling cannabis. Health hack: if you’re looking to spare your lungs, try this metal bowl piece specifically designed to be used for gravity bongs.

Many homemade bongs or smoking devices are made using single-use plastic bottles, which contain PETE or PET (polyethylene terephthalate) that can release chemicals when heated (like how the water from a bottle that’s been left in a hot car can taste odd). You may pull these chemicals into your lungs when applying heat to your gravity bong.
You can reuse the foil in your gravity bong. Don’t worry about changing it unless you rip the foil or if the holes get clogged and prevent adequate ventilation, at which point you should swap it out with some new foil.

Light the cannabis and slowly pull the smaller bottle upwards out of the water while the bottle fills with smoke. If the bottle doesn’t fill with smoke, you may need to check and make sure that your cap is fully screwed on, and that there are no holes or gaps in the side of the bottle. Any leaks could compromise your gravity bong, and some trial and error may be required before your first successful attempt at a functional device.
The cannabis smoke will be cooler, having been filtered through the water, but it will deliver a powerful hit of THC. For best effects, prepare yourself and don’t force yourself to inhale too much smoke. This has the potential to make even the most veteran of cannabis consumers cough, so proceed with caution!

  • Plastic bottle (any size, but 16-20 oz is ideal)
  • Bucket or 2-liter plastic bottle
  • Aluminum foil
  • Box cutter or sharp knife
  • Poking device
  • Cannabis strains of your choice (at least one gram)

Cut the bottom off your larger 2-liter bottle and fill it with water. If you’re using a bucket, fill your bucket with water.
Here’s the tricky part: Submerge the smaller bottle in the filled bottom half of the larger bottle (or bucket) until just the cap remains above water. Carefully screw the foil-wrapped bottle cap back onto the bottle.

The short answer is yes. Gravity bongs force heavily concentrated smoke into your lungs, filling them to capacity beyond the average hit from a pipe or joint. When you inhale the contents of the smoky bottle into your lungs, you are essentially breathing in the smoke from an entire bowl of cannabis in one go. For this reason, gravity bongs are certainly not for the faint of heart. A tried-and-true method of old school cannabis consumers, it delivers a powerful hit of THC that may be too much for an inexperienced cannabis beginner.

Find out what a gravity bong is, how it works, and follow our easy steps to make your own homemade gravity bong from a water bottle.