what material would work for this?
I want to construct a faux headboard to block off the window above the bed in my RV. (It's not an emergency access window, there is another window near the bed, and this window is annoying.) I'm going...
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1/4" plywood (or even a bit thinner material) with some wood strips, say 1/2" x 1/2", glued on the back to stiffen it would work fine. Maybe have three such strips horizontally across the width and one vertically at each end to tie things together. It's a question of making the structure more rigid as much as making it stronger.
Another approach would be to build up a composite structure of thin plywood skins and rigid foam insulation board in the middle, all glued together. That can be incredibly strong for the weight. The stresses are carried by the plywood skins, and the foam serves to keep them flat and in alignment with each other.
For fastening to the wall, I'd consider using some decent-sized pieces of Velcro so the headboard is readily removable if that should be necessary for some reason, say because you're unfortunate enough to have the glass in the window get broken.
Another approach would be to build up a composite structure of thin plywood skins and rigid foam insulation board in the middle, all glued together. That can be incredibly strong for the weight. The stresses are carried by the plywood skins, and the foam serves to keep them flat and in alignment with each other.
For fastening to the wall, I'd consider using some decent-sized pieces of Velcro so the headboard is readily removable if that should be necessary for some reason, say because you're unfortunate enough to have the glass in the window get broken.
