Dude saying just melting some ore is enought and then you basicly have a steam engine is so wild. Do you have any experience in metal working? How would you create the round parts like the piston and the bore? What about valves? The greek steam enigne woold have not created significant power for anything usefull. I would bet that most of you in this thread would not be able to build a steam engine from metal if you had acess to a home depot.