Here are some bongs i made out of some smart water bottles. They are both airtight and rip. The first Video is one with just a regular ash catcher on it. The second one is an inline ash catcher.For more videos check out my Youtube channel. YouTube - Kanaal van Fitness420 [ame="http://www.youtube.com/watch?v=dBYOJ6gb14k"]YouTube - Milking Homemade Bong (ash catcher/perculator)[/ame] [ame="http://www.youtube.com/watch?v=LYy8qKD5uw8"]YouTube - Milking Homemade Inline Bong (Inline perc)[/ame]