I was working on smekting down a few WWs this afternoon, working from my Lyman mini-mag furnace. All of the WWs I have are dry, been stored dry and not washed. We are having rain right now so I was working in the relative comfort of the garage.
I had just poured ingots, leaving the pot about half empty and decided to reload. As I was placing a couple WW on top of the melt, one slipped under and immediately "popped". No damage to me, no burns no nothing. A couple good globs landed around the pot, with a large glob landing a few feet from the pot.
I know there wasn't any water on these weight. Could a grease glob have caused this? I am definitely looking closer at the WWs as I put them in the melt from here on out.