posted 08-29-2001 10:50 AM ET (US)
I pulled up this old topic because I have some new information that might be helpful to restorers. We just finished restoring the forward hatch cover on an '83 15', which had been neglected and was showing dark spots from weather.This is a plywood cover with 2-ply Phillipine (probably) Mahagony veneer on both sides. For the underside, sanding and revarnishing was enough for us, since you don't see that side much, and it gets bonked by anchors, etc.
The top side I belt sanded and refinished. I was going to sand off the entire veneer and replace. You can get a 2' x 8' sheet of Honduran Mahagony at Rockler for about $60 (you can't get away with the 2' x 2' sheet because you need 30" width). I looked at it, and it appeared to be a pretty good match, maybe a little oranger than Phillippine. You can get Phillippine or African at other specialty wood stores. Rockler suggested using an oil-based contact cement (available at Home Depot etc.) to attach to avoid clamping issues. Just follow the cement directions. Epoxy would work, too, but you have to clamp. Whatever you use make sure it's not water based.
After sanding off the first ply of the veneer (runs with the boat), I found the ply underneath very nice looking, so I fore-went (sorry) the new veneer and simply re-varnished the second ply.
Whaler purists will probably note that the second ply runs across, not with the boat, and is thus not a "classic" look. Well, I like the look because now the hatch matches up with the grain of the seats!
After belt-sanding off the first ply, I used a medium sandpaper to prepare the second ply for finishing. I applied a light coat of Mahagony stain to even out the color, then finished with Captain's varnish, available at West Marine (elsewhere Z-Spar has been suggested, available from Boat US), four coats, using steel wool in between coats. I polished with fine steel wool and lemon oil.
When and if the cover wears down I will sand off the second ply and re-apply a new Mahagony veneer.
HTH anyone with a similar situation.