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Support spacing for foam
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I'm with grayfox. I'm currently building a new layout using 3/4" plywood. Why? I want it strong enough so that if someone lays across it it won't cave in, AND any vertical easements will become automatic as you cannot bend the stuff all that easily. My benchwork is also 2X4 on 18" centers. I can crawl around on it without damaging it. Overkill, maybe, unless someone by "accident" down the road puts their weight on it. Picture some dufus (me) falling through the benchwork. Now picture yourself falling through your benchwork. Get the idea? Unless you're going to have a very narrow layout, I'd put down some plywood. <br /> <br />You can easily span long distances with the foam, BUT the foam cannot support much weight before it starts to give. When you look at all the cost of what you'll put on top of the foam, as well as the value of your time, plywood is CHEAP. <br /> <br />Mark in Utah
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