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Tod you put foam around all sides of the elements but the window side than pore the urethane around then. Why urethane? Does it help it resonate? Would something harder like Degadur 412 work better? It’s hard as rock it used in floor covering where there is heavy forklift traffic. I’m getting all the parts together for my project. You may have read that I planing to build a rotating array. So for I got the Rotating switch, The steeper motor, the steeper motor drive and now that I know my motor size and switch size I can start my cad drawing on my float that will hold it all. I’m holding off on the elements until I decide how big of an array I should make for shallow water.
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