I will look into a tickening agent but I thought microballs
was an epoxy additive.Could the heat generated when
polyester kicks could melt the balls?
John

"ddinc" wrote in message
...
Dont use bondo. It expands when wet, and your fairing will
become unfair.
Use micro or glass balloons.

"jcassara" wrote in message
et...
I am in the process of repairing a rotted deck core. The
area is about 6 sq ft and is built up with polyester
cloth.
Is there an additive to thicken polyester resin to use
as a
fairing compound? Can automotive Bondo be used? Will
fairing
compounds as found at West Marine or Bondo stand up to
typical deck activity or will they crack?

Any info would be great!

John