i have made a decent home made bong out of a 1 litre pop bottle, some hose, and som copper pipe fixture for the bowl. recently thou, hits have had a slight taste of burnt plastic
my question is, how often should one replace the bottle in a home made bong?
Yeh what higher said seems about right, you dont need to replace the bottle. I dont know where the hoseis on your bong but I think that may be the burning taste.