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"Toller" writes:
Question: Is this a massive plank or quarter-sawn strips glued together? If it is a massive plank you should count on it warping. It is two pieces (both 2" thick) glued together. I don't need it until next spring. I can get it close, leave it for a few months, and then finish it. Would that help? Some but I think it will warp sooner or later anyway. A good epoxy seal helps slow the process. But as someone else stated: Without being able to see your blank and how the grain looks it is very hard to be anything but rather vague about this. This is probably the wrong answer but I actually mean this: Use the oak for something else. Buy some light wood like Western Red Cedar and shape a board. Add unidirectional carbon for bending stiffness and strenght. Sheat in glass-epoxy and paint. Oak is about 50% heavier than mahogany, but I actually want the weight, so that is not a problem. Besides, it is free and the cedar would be about $50. I would say your troubles with the white oak is more about handling and working on it in your workshop than all-up weight on your boat. You will spend a lot more time shaping your oak than it takes to shape cedar. Oh, I almost forgot. It is my experience that oak and epoxy coats don't always work well together. -- ================================================== ====================== Martin Schöön "Problems worthy of attack prove their worth by hitting back" Piet Hein ================================================== ====================== |
#2
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There is no need to worry about making a daggerboard, centreboard, or rudder out of solid wood. Visit your nearest sailing facility and look at all the centreboards, daggerboards, and rudders made of solid wood. The fact that your board is glued up means it will not warp. You can look at the end grain to see which way the two pieces are oriented. Put a couple coats of polyurethane varnish on it and refinish it every few years. I've never put epoxy resin on oak but peope who have say it's only necessary to sand the surface of teh wood to roughen it up a bit. Oak contains tannin, and acid, and acids dilute epoxy rdeucing its bonding strength. One way to clean up epoxy resin that has not cured is to use vinegar, lemon juice, or some other mild acid. -- ------------------------------------------------------------------------------ William R Watt National Capital FreeNet Ottawa's free community network homepage: www.ncf.ca/~ag384/top.htm warning: non-FreeNet email must have "notspam" in subject or it's returned |
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