With the hole bit i suggest you use the scissors to make the hole.

Because you can make a little cut then manipulate it into the desired shape with the scissors.
RUTBpiping Reviewed by RUTBpiping on . First homemade bong Ok so tonight i'm making my first homemade bong out of a plastic bottle. First of all, is a carb necessary, and if so, what is it used for? Also, any good ideas as to what i can make my cone peice out of (from household objects)? At this point all i got is an Al. can, which i'd rather not use due to paint/toxic fumes. Rating: 5