Reply by crank49

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Posted on Plywood Alternative

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4030 posts in 2971 days

#1 posted 06-29-2012 05:57 PM

Torsion box, wheather the core is a wood grid or foam, is the way to go.
Sinse the skins are in compression or tension only, you can use 3/16 hardboard and be plenty rigid.
If you go with foam, I’d use the thickest practical, 2” perhaps.
Also, with foam, be sure to use an adhesive designed for foam. It’s readily available.
I would make a perimiter frame out of wood even with the foam core to protect the edges.

And, I agree with others here, keep the tiles as thin and light as possible.

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