Found a pair of cast iron " ingot molds " yesterday for $8.99 ea. Grabbed them both.
I'm smelting WW's in a 50 lb. pot with a turkey fryer burner. This should be just about ideal to use an an ingot mold.
I use a 20 lb. Lee Dipper pot to cast with ( no smelting with this pot ) . These should drop in easily into the Lee 20 lb. pot.
I only had a chap stick in my pocket to use for size comparison purposes, so I placed one in one of the cavities for photo purposes.