: No, not the cow type. The interior of my cockpit has turned white. It is raw
: epoxy, and does sand off.I'm sure it is water related, it is only where
: water sits for extended times.Should I varnish it after sanding? Thanks
: for your help, Don

You are probably getting some oxidation of the epoxy. The whiteness itself is not a problem. Don't sand it off unless you plan to varnish the inside to protect it from further oxidation. If you don't protect it, sanding it off will only expose new epoxy to further oxidation and the desire to sand it again.