Parallax wrote:

My epoxy is 10 yr old West System stuff and my metering pumps broke
yrs ago so my mixing is prob a little off. I am using the colloidal
silica I used yrs ago for blister repair and it seemed to work then
but I may not be using the righ amount. Today, I plan to buy another
gallon of the West epoxy, pumps and fibers.

Milled fiber does not thicken epoxy very well. While it is great for
strong bonding it will definitely not make epoxy stiff enough to keep it
from sagging. For fairing and filling I mix in microballoons first then
slowly add silica to get the right consistancy.

--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com