: I'm getting ready to do the final sanding and varnishing on a Pygmy Osprey
: Double, after paddling it for a couple of weeks. Pygmy uses System Three
: and recommends a three week cure time before final paint/varnishing. I'm
: guessing that, after I get rid of drips, sand, etc, I may be tempted to
: put on one more coat of epoxy, just to get the surface as smooth as
: possible. The question: do I really need to wait a full 3 weeks more
: before varnishing, if I top off with yet one more "finish coat"
: of epoxy?

Every 10 C raise in temperature halves the curing time, just dont overdo it. Mechanical keying is not the most important reason for sanding before final finish and do not use too corse paper on that.

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