Haunting thrift stores, I've found some Nordicware items-cast aluminum in a couple of shapes that I thought might make good molds for ingots. When I got them home SWMBO noticed their nice condition. Put em on ebay for half the price of new ones and now I'm looking for ingot molds again. Guess I'll have to dry out some beverage cans. Those 20 ouncers look like they might be convenient for my 4-20.