Originally Posted by
speedracerntrixie
I think that may be a bit overkill. I personally use just a dust mask but I also do my fiberglass sanding outside. IMO doing your layup indoors subjects you to more harmful vapors then what the dust is. Neither of the large aerospace companies that I have worked for have required us to use anything more then a dust mask when sandeing fiberglass. No activities at either facility required an SCBA.
Fiberglass which is usually polyester based and epoxy are totally different animals when it comes to triggering allergic reactions. I am fine with dry sanding polyester resins but thirty seconds after a bit of epoxy dust hits me my lips *****le my nose runs and my tongue and throat swells to the point where my breathing is affected. I will be nauseous for hours.