After having read a lot about fluxing and skimming, I've started to wonder about one thing:
What exactly happens to the alloy when you flux it? I find it darn fascinating that by adding saw dust, lube, candles, oil or WHATEVER the impurities come together and float to the top! But why does this happen, what can be said scientifically about it?
Now please indulge me, I'm a curious fella [smilie=6: