Quote Originally Posted by s7reet
i know how to make the apple and the can pipe, but i do have a question. what is the carb for, and why would you even put it on there if your supposed to hold it down while puffing?
the carb is to allow airflow. think of when you have an empty glass soda bottle, and keep sucking on it, it creates a vaccum. same thing with smoke but to a lesser degree. when you're almost done with your hit, you let go of the carb, which lets air in and all the smoke remaining shoots into ur lungs.