Reply to "The latest Zinc pest discovery"

John Pignatelli JR.OGR Forum Member

When I had a spin caster we found that zinc rot occured when you did not take out the slag that pools at the top of the melt pot. You need to skim it off or it will contaminate the metal. Some folks get to stingy and use the slag to save a few bucks. Metal casting either injected or spoon can be very temperamental, it doesn't show up in the metal being used to latter in the parts life.

2/3/207:04 PM

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