35516hazards when mixing fillers?
- Apr 1, 2004All this talk of fillers has me thinking about the hazards of filler
dust, especially fumed silica (sometimes called cabosil). When I dump
it into the epoxy, I get small puffs in the air, some of which I
inevitably breath in. I always wear a respirator when grinding our
sanding, but often mix my fillers without a respirator (I still have
So, a little aprehensively, I dug into my library and re-read the
chapters about safety from "Devlin's Boatbuilding" and "The Gougeon
Brothers on Boat Construction" There is a discussion about wood dust
and why you should protect yourself when sanding fiberglass, but not
much mention about fillers. Except, on page 58 of the Gougeon
Brother's book, I found "...WEST SYSTEM fillers and additives present
few health hazards. Use all of them in adequately ventilated areas,
and, for comfort as much as for safey, avoid inhalation..."
So "fumed silica" sounds to me suspiciously like "glass dust" and thus
"baaaadddd for the lungs" I hope I am wrong - it is a relatively
cheap filler and really awesome for creating very smooth spreading
fillets and glue. Can anyone shed any light on the subject?
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