08 January 2009
I cast in my loading room, which is a spare bedroom. I take no special precautions for ventilation. If I do any casting in the summer when I can have widows open, I open both corner windows so any wind can blow through. Most of my casting is done in winter, in Wisconsin that means no vents, or it costs buccu bucks to heat. So there's no venting in the winter.
I had my blood levels done a year ago, it was 5.0, no concern. I just had another test monday, we'll see what that says.
I don't mind the smell of the smoke produced by fluxing. It does not contain any lead, so I ignore it. As for lead fumes, they're minimal at normal casting temps. Few lead pots can raise the temp above 1200 degrees, where lead begins to fume a lot. Under that temp, there are fumes, but what there are is a thin layer directly on top of the lead. Because it's heavy, it stays nailed to the molten surface. If the surface of the lead is very near the top of the pot, it can spill out, but it is very difficult to become airborne.
Normal precautions of not eating, smoking or drinking while casting prevent ingestion of lead. Then a thorough washing of the hands afterward gets rid of the rest.