Originally Posted by
imashooter2
I often see it suggested that melting WW at temperatures lower than the zinc melting point would avoid the risk of contamination. Just as often I wonder how one controls the temperature on the bottom of a big pot with 50-100 pounds of WW piled up in it.
I suppose that you could melt a very shallow pile such that you could see the WW on the bottom melting, but it seems like that would be a very long and expensive day heating, cooling, adding, repeat…
What am I missing?