Well I change my plans a bit...
I now plan to use direct melting with a propane and compressed air melting torch .
the metal will be held in the small crucible & holders that you see laying on the top of the stool .
I've got to make a fire brick stand to take the place of the wooden stool of course :-)
I bought the german made casting torch from Otto Frei. it uses a standard air compressor and a standard propane tank like you would find on a back yard grill.
Properly adjusted , one can achieve a 4000 f degree reduction flame . This enable a master to quickly melt metal without having to heat a whole furnace just to melt a few ounces of metal. The crucible gets heated along with the metal and its small scale feels safer... at least in my mind.