Fumed Silica

[flyfisherjoe]

Some things you should know:

She asked for hydrophobic. This would be the type to coat your flies to make them float by not absorbing water.

The one for drying flowers is hydrophilic, it absorbs water; would cause flies to sink.

Most of the products sold for thickening coatings, including the ones at West Marine, are hydrophilic.

Hydrophobic is hard to find.

I found this, the third item down"fumed silica" @ $4.40 a quart

http://www.king-cart.com/cgi-bin/car...ct_match=exact

While it doesn't state it's hydrophobic, it is. You can verify it here:

http://www.epoxyproducts.com/2_fillers.html

Be careful handling this stuff it's extremely light and becomes airborne easily. Wear a dust mask.