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Forum Index : Windmills : Homemade wooden blades seal
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| charlie_ruizpr Newbie  Joined: 08/07/2010 Location: Posts: 36 |
I have made 10.6' 3 wooden blades on a jig with a saw and have had them stored in the shed for 4-6 months because I do not know what is best used to seal them from the elements. I have seen people use fiberglass resin and it adds weight to the blades and also seen people using varnish but they should re varnish every 14-18 months. What would you recommend I use to seal them? Could Thompson's WaterSeal 1-gal. Waterproofer Plus Clear Wood Protector work well? |
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Madness Guru  Joined: 08/10/2011 Location: AustraliaPosts: 2498 |
I would be looking at marine wood varnish or an epoxy type product. These are made to handle harsh conditions, the epoxy types may be better at resisting erosion that will occur. There are only 10 types of people in the world: those who understand binary, and those who don't. |
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Gizmo Admin Group  Joined: 05/06/2004 Location: AustraliaPosts: 5078 |
One thing to watch is the leading edge. Bugs and dust can wear through the coating over time, and then water can get in between the wood and paint/resin/epoxy, which leads to delamination. I remember one common fix was to run aluminium tape along the leading edge to protect it, but I don't know if this is still done. What ever you coat the blades in, I would still want to take them down and inspect the leading edge for wear once a year or so. Glenn The best time to plant a tree was twenty years ago, the second best time is right now. JAQ |
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| charlie_ruizpr Newbie Joined: 08/07/2010 Location: Posts: 36 |
Well thanks for your help i will look into it |
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yahoo2 Guru Joined: 05/04/2011 Location: AustraliaPosts: 1166 |
If you are looking for a clear coat, I would go with two coats of a standard thickness marine epoxy resin with two coats of a traditional oil based varnish or polyurethane uv blocker (clear coat) over the top to stop yellowing. warming the epoxy and the blades should thin it enough. If the epoxy is sold as penetrating it is probably poor quality epoxy with a lot of solvent in it, the finish will be quite porous and let moisture in. I struggle with brush marks with polyurethane top coats even with a slow reducer, better to spray it on. I'm confused, no wait... maybe I'm not... |
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