I have a huge old cast iron canning cooker. Melted 150 pounds of lead in it last weekend. Less than half full. My problem is my two rcbs ingot molds heat up and then the ingots take too darn long to cool. Spent a couple hours making ingots and watching my propane bottle go down just keeping the lead liquid. Anyone make their own ingot molds? I need the ingots to fit in the Lee casting pots. Muffin tins don't work. Messed up two of them tinny buggers trying. Don't want corn cobs from the corn bread molds. Can't seem to find anything else to knock out a few hundred pounds an hour. I want to be able to stack or box the ingots. I have several hundred pounds cast up at a time. The pot will melt it, Just need something to put it in to form the ingots.