"Searcher7" wrote:

I just finished making a plywood door for a game cabinet The
original

door had been made of particle board, but the 3/8" lip on both ends

had begun to disintegrat over the years.

Since the disadvantage in using plywood is that it tends to warp,
is

there a good way to seal it to prevent this before I prime and

paint?
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Lew Hodgett wrote:

Swing already put this to bed.

Dewaxed shellac.
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"Searcher7" wrote:

I'm not going for a clear finish. The door has to be primed and
painted black after I seal it.
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Clear or painted surface has NOTHING to do with sealing the surface.

You wanted a sealer which is what dewaxed shellac does and it also
serves as a primer for the raw materials.

Lew