Way back in my youth before camp stoves were common, this was a Boy Scout project. We built a portable camp stove out of a tuna fish can, corregated cardboard, and Gulf Wax. Cut the cardboard into strips as wide as the tuna fish can is deep, roll up the cardboard into a continuous disk that would fit into the can, and then pour melted wax into the can to the top of the cardboard.
Did it work? Yes.
Did it work well? Not really.
BTW, we also built stoves using a coffee can, a roll of toilet paper, and denatured alcohol. Same principle -- container, wicking, and fuel.
Of the two, the alcohol stove was significantly superior.