Hello grasscity. well my glass bong broke a few months ago and i built one out of a bottle that's been serving me well since, i got bored today and decided to add a perc. it ended up working really well and the smoke hits nice and smooth. i have glass bowls but much rather rip bongs soooo this is what i made. =D let me know what you guys think about it and feel free to post milkshot vids or pics of your homemade masterpieces!