On Mon, 01 Oct 2012 05:47:48 -0500, "Lloyd E. Sponenburgh"
lloydspinsidemindspring.com wrote:

As far as concerns "lead fumes" -- WHAT lead fumes? At correct
casting temperatures, no significant or harmful amount of anything
lead-bearing will get into the air that you don't throw into the air
with your tools.

I really should have added, and didn't, that it's skin contact and
absorption through ingesting lead residues that is your real hazard when
casting.

Unless you were to convert lead into a gas or some super-fine aerosol
that will float in air (don't know how you'd do that, actually), there
are no "lead fumes". But flux fumes? Lotsa!

LLoyd