> A friend gave me (five) one gallon cans of "air-o-sil" has
> anyone heard of used this product? I made a test batch and it seems more
> fluffy than microballons but the strenght seems to be the same, The color
> is very white compared to other fillers, I would like some advice on this
> before i build a craft with it.

> Thanks in advance!-Johnni

air-o-sil is a fumed silica, similar to cab-o-sil, however, there are many different grades. some grades are good to thicken epoxy. i would suggest two things: 1. get the number of the particular grade and contact the epoxy manufacturer or 2. test it in a small quantity of epoxy and see if it cures. if it does....... go for it.

i used cab-o-sil in all of my fillets without any problems. this material does make the fillet somewhat whitish in color. good luck steve