> Works great. It's super fine stuff--you probably don't want to breathe the
> stuff in, though.

> Does anyone know if silica fume would cause silicosis?

> Shawn

Gougeon Bros. (West System) have MSDS's online for all their products. No mention of silicosis due to acute or chronic exposure to this product, but it makes sense to avoid or reduce breathing dust of any kind by taking proper safety precautions. In this case all it takes is a simple dust mask rated for nuisance dusts. Colloidal silica has a "slight" health risk (1 on a scale of 0 to 4, 0 being "minimal" and 4 being "severe").

You can access the MSDS for colloidal silica and other West System products (resins, hardners, fillers) at the link below if you are interested.

Work (and play) safely,

Michael