"DerbyDad03" wrote in message
...

Can this be fixed? If so...how?

https://i.imgur.com/1MVvQMW.jpg

I first noticed it this morning and when I asked SWMBO, she said the same
thing. She doesn't recall soaking it or leaving it in a shallow puddle or
anything like that. One day it was flat, then it wasn't.

I'd try treating it as if it's wood and see what happens...

When you wash it, wash both sides.
Then stand it on edge until its dry.

That process evens out the moisture on both sides and the boards stay quite
flat... any minor undulations or cupping are certainly not perceptible in
use.

I also soak the maple end grain boards I make with mineral oil occasionally.
I keep putting it on until it lays on the surface and doesn't soak in. Then
I wipe off the excess and let it dry on edge. There is usually some weeping
so I sit it on paper towels. Doing this keeps water from soaking into the
grain as deep as it would if it were untreated wood.