[phatch]

I've seen descriptions of those.

I've used rolled cardboard in a tuna can and filled with parafin wax for the fuel. The cardboard acts as a wick. Works pretty well but burns sooty. But that's just the inside of the #10 can that gets most of the soot. With some care, you can de-burr or roll the sharp edges to make it safer to pack around. The tuna lid on a stub of wire coat hanger was used to adjust the heat as it basically smothered the part of the can it covered.

I was the Scout Master who had them build the stoves so it was in the early 2000s.