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Thistle 1040 - Rebuilding begins with wooden hull reinforcement


By Thistle1040 - Posted on 23 December 2011

thistle seat supportNow that the hull is sanded clean and all the old wooden parts removed, it's time to start rebuilding. The glue used to laminate in these 1950s era Thistles can become brittle and fail after all those years. This is even more true in areas of high stress in the hull. You'll often find stress cracks in the laminate (5 layers of 1/16" mahogany) around the seat supports.  If the boat has been sitting on a trailer with inadequate support you'll find stress cracks or delamination in that part of the hull. All of these areas need to be repaired and strengthened to meet our goal of a boat with another 50 years of competitive sailing.

I started by making a simple bed for the seat supports with one layer of fiberglass tape. This tape will be sanded and the edges feathered and then the entire interior of the boat will be sheathed with epoxy and fiberglass cloth. I use 3.7oz. deck cloth from Tap Plastics. It's totally transparent when the weave is filled with epoxy.

I'm including a photo of my light jig. I have a frame that holds heat lamps that can be adjusted. It's not enough to heat the whole hull but plenty for one large section at a time. Without a heated shop, I'd have to wait until the weather was warm again and that's not going to happen for several months here in Oregon. This way I can keep working through the winter.

Best Marine Epoxy

My favorite epoxy?

 

EpoxyUSA.com Progressive Basic No-Blush Epoxy

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