That's a slight of camera! If you could see it in real life, you'd see that it's a complete mess. I've got another project going at the moment, then I'm hoping to get the shop into sustainable order. The vise Jaws were a diversion from a mother in law remodel that is taking all my time at the moment.

I see what you mean about the metal molds acting as a heat sink. Am I correct in thinking that shouldn't be a problem with my frying pan method since the cast iron is both crucible and mold?

Jim