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post #10 of Old 01-18-2016
Captncol
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Re: Bedding Deadlights w/ Butyl tape, DC795 and Screws

I'm looking at doing this job in the spring. A thought - your calculation of expansion is for the distance between two screws, whereas the greatest amount of expansion will be between the two screws that are furthest apart. That is about 33 ins not 5 ins. So the movement will be about six times your calculation. However, the substrate (the deck) will also get hot, almost as hot as the acrylic, and expand also but at a different rate. But as there are no leaks, what the hell, I'll copy you!
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