Wooden boat renovation : new life for old boats using modern methods by Trefethen Jim 1942-

Author:Trefethen, Jim, 1942-
Language: eng
Format: epub, pdf
Tags: Wooden boats -- Maintenance and repair
ISBN: 0877423660
Publisher: Camden, Me. : International Marine
Published: 1993-02-15T00:00:00+00:00

Preparing the Hull

All the through-hull fittings must be removed—the rudder too, if this is practical—and the hull stripped down to bare wood and sanded with 40- or 60-grit paper. For more detailed instructions on stripping paint, see Chapter Eleven. Rake all the caulking from the seams with the bent tang of an old file ground to fit the seams, and let the planking dry out for at least several weeks. While you’re waiting for the hull to dry, make any repairs to planking and frames, and replace any fasteners that are deteriorated or loose.

Now give two coats of epoxy to the entire area that will be covered, making sure the seams are well coated. The first coat can be thinned about 10 percent with lacquer or epoxy thinner, but the second coat should be straight. These first coats of epoxy will be absorbed by the dry wood and will seal the hull, preventing the wood from sucking the epoxy out of the fabric when you wet it out.

Next, fill all the seams with epoxy thickened to peanut-butter consistency. You need not wait until the seal coats set to start filling the seams. Just make sure the putty is thick enough that it will stay put and not run out of the seams before it has

e a reefing lool by grinding and bending Ihe tang of an old file.

Figure 7-30. Preparing the hull for fiberglass.

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WOODEN BOAT RENOVATION

a chance to set. Force the putty into the seams with a putty knife and fair the outside as you go along; epoxy with Cabosil dries very hard, and the less you have to sand off, the better. Let the epoxy set overnight, flush with water to de-wax, and sand the entire hull smooth with 80-grit paper mounted on your half-sheet pad sander. If the epoxy clogs the paper, you either need to de-wax more thoroughly or you need to let the epoxy cure a little longer.

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