: Hi all ~

: I'm at the point with the Cirrus and Merganser hulls that requires applying
: epoxy fill coats. Since I'm going to paint both hulls white or off-white,
: I'm thinking of using some colloidal silica (West Systems) to slightly
: thicken and toughen the fill coats as well as filling the weave faster.
: Have any of you tried that approach? I haven't and wonder if it's a good
: idea...or not.

Jim,

Seems to me that if you added enough silica to significantly harden the epoxy, the added difficulty of sanding the fill coats would outweigh any benefit.

Sam