Reply by rwyoung

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Posted on Thickness for Tongue & Groove Boards

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409 posts in 3677 days

#1 posted 05-27-2010 07:51 PM

+1 @ CaptainSkully

Don’t plane down 3/4” T&G material, just resaw from thicker (say 5/4) and make your own T&G with a router, tablesaw, Stanley 49, whatever.

1/2” should be fine for vertical panels. For a large horizontal panel I’d be a little worried about it sagging with time but just speculating. Probably have to be a much longer run than your stated above for sag to become an issue at 1/2” thickness. Heck, 3/8” is probably fine for vertical panels but then the T&G get a little delicate at 1/8”. At 1/2” the T&G would be around 3/16”.

-- Don't sweat the petty things and don't pet the sweaty things.

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