This is a video tutorial in the Diet & Health category where you are going to learn how to make a dual-chambered bong from water bottles. You will need 2 empty water bottles, a small razor blade, duct tape, small pipe and a socket. Remove the labels from the bottles and join them up with duct tape. Cut a small hole on the cap of one of the bottles. Take a small piece of the pipe about 8 inches long and pass it through the hole in the cap. Fix the socket on the outer end of the pipe. Now mark and cut 4 holes on the side of the bottle that has the pipe inside it. You need to watch the video for the rest of the instructions.
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