David..., it’s a lot more fun when the cast works! Like you said, wouldn’t want to make a habit of it though.
Dave..., I use petrobond sand for bigger casts like guards. It’s almost identical to delft, and cheaper. Yes, a fair amount of brass needs to be used... Full disclosure on the carving design..., I shamelessly copied the design from an old F. Harrison plan of the Crockett rifle, so can’t take credit for that.
Best,
Ed