"...Bed roll goes outside the tube..."

As a blonde gal I used to work with was always saying (about five minutes after the punchline), "I get it, I get it." I assume that your coffee can stove and pot can fit inside of a piece of 4" PVC. Must be the so called one pound cans. I have never measured one of those, so I assume it will fit, or you wouldn't be using it. Makes mucho more sense now...