If ure a DIY fan I'll reccomend this Build the thingie I drew lower and put ure coal in after u light em half way. Figure out the construction details yourself, like making a foil tube and attaching the cooler ( reccomend tape . .lots of tape) and keep flamable and toxic materials away from the cans . .the seal doesnt have to be perfect. Trust me on this - I'm a hobby blacksmith, i know my coal.