Looking good! That setup is similar to the aluminum molds used for pouring new Babbit bearings, where the "release agent" is soot from an acetyline torch flame without the oxygen added.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!