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Old 01-31-2016, 02:44 PM   #1
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High density polyurethane plastic frames - ribs

I like this idea a lot. It solves the rotting cracking oak frames problem.
The worst part of my own hull rebuild was dealing with bent frames. The planks were not any problem. Infact I was able to reuse all the mahogany planking. Did use new bronze screws.

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Old 01-31-2016, 03:17 PM   #2
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Cool
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Old 01-31-2016, 04:26 PM   #3
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How strong do you think the foam is

Laminated oak ribs are way stronger than foam . the ribs do more than keep the planks fair, they also distribute the load over many planks . I don't think I would go this route. It is just too easy to cold bend strips in place glued with epoxy.
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Old 01-31-2016, 07:42 PM   #4
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It is extremely strong this plastic framing.
HDMW polyethylene. I can tell he likes the stuff.



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Old 02-11-2016, 09:45 AM   #5
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Thanks for videos.
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Old 06-21-2016, 10:47 PM   #6
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I am a former shipwright. Without going into how we did it in the old days, laminated oak strips, epoxied are probably the easiest for owners to do and have a solid hull. I would check with a couple good wood surveyors before using plastic. The plastic could make that part of the hull stiffer and cause other parts to work too much in a sea. Plastic could shatter, fasteners pull out and so on.
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Old 03-24-2017, 11:24 AM   #7
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I am not an expert, but I believe that mixing materials like this, is no good, because wood is a live material, and plastic is not, so when the wood actually getting its strange,from being able to move with the element it is forced to work against, like waves. The plastic will not. So I am convinced, this will cause stress to the wood, exactly were the plastic is attached. If you look at the way Coronet built their boats. The wooden interior was never attached directly to the plastic hull. They used a frame.
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