At first I was confused as to how you lit the fire in the paint can, until the end when I realized you stick the whole thing in there! Interesting.. so you don't even directly ignite the materials. So if I understand correctly you make vent holes and then you put the lid on top? What is the reason for the lid if you don't mind me asking? And how do you ensure that the escaping gases from the can are directed downward? Thanks for humoring my newbie questions