Just to clarify, do you mean "paraffin"? This look like a pretty neat way to give both heat and CO2; however, it doesn't look like the most complex thing to make... Do you think you could take some closer pictures of exactly how it works or show diagrams to aid me in building one? It just runs off of something like sterno type wax, right? I could start a build thread too and include everything...
Do you have any newer shots of the girls?