Centerboard trunk cap refinishing

I'm refinishing the centerboard trunk cap. At the one end (centerboard opening/front) there is a crack that is about 4" long and at most 1mm (1/32") wide. The crack doesn't seem to impede the sturdiness so I'm thinking of reusing the wood. Should I use a filler to fill the crack before refinishing it or will the sealer and varnish fill it? I'll be using Interlux Inter-Prime Sealer #1026 and Z-Spar #2015 Flagship Varnish for the refinish.

Claus FS5074 Ames, IA

Comments

Assuming you are totally stripping the wood, and perhaps restain

Assuming you are totally stripping the wood, and perhaps restaining, I would fill the crack with epoxy and microspheres which often come in a brown color so it blends in well. Don't bother with the sealer(unless you already purchased it), just dilute the initial coats of varnish with thinner. First coat 50% thinner, second coat 25% thinner, thereafter 5-10% thinner depending on weather, RH, etc. I refinish mahogan runabouts for a living. Paul