The larger bowl portion of the socket will act as a bottleneck and brace against the bottle cap to stop it from falling into the bottle. It would be best to start with a smaller hole and make it larger, because if you make it too big you’ll need an entirely new cap.
Instead of using a bowl you can also roll a joint and stick it in the hole at the top. If the connection feels a little loose you can stick a bit of gum around the edges to give it a firmer connection. Tape is a little more difficult but could also work. For an even better seal and overall better hit, consider using a glass bowl and rubber grommet from a real bong. An easier way to make a bowl is to shape it out using tin foil and just put it over the hole where the cap should go. Poke holes in the tin foil for the smoke to go through.
Excessive use of lighter to melt the plastic can makes holes too big and/or plastic too weak.
Don’t let go if you are holding the carb with your finger. If you plan to smoke immediately you should fill the socket bowl with weed and get a lighter before you fill the bottle with water.
Ground smoking material will work better, as it will restrict incoming airflow less than solid matter will. Take the pieces of herb and rip it up into small pieces, about the size of bead or a very small pebble. Place the pieces of herb into the bowl – remember your bowl is the head of the socket.
Try to breathe the air in deeply. Breathing in air will bring the smoke into your lungs. [4] X Research source Repeat the process as many times as you want. Change the bottle about once a week. It gets dirty after frequent use.