Spot Shooter
I think there are a few of us that are using Coleman camping stoves and old cooking pots with great satisfaction, ladel pouring single cavity rifle, double cavity rifle, six cavity pistol, and both single and double cavity round balls in my case. It's clearly the cheapist way to go if you have or can find an old Coleman type stove or have a turkey frying pot. You can put a larger pot on that burner and melt a lot of lead.
Fluxing is done with something that will burn on the top of the lead. Oiled sawdust was used for years, small pieces of candle was work well, beeswax works well. I've never used oiled sawdust, although I have lots of sawdust in the garage, but have lots of candle wax left over from candle making experiments and use that.
Wayne the Shrink