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I should have paid more attention but after regular washing of top surface, my half-inch-thick board is rocking like a cradle.Not practical flipped over as it has a counter lip. Tried keeping backside moist over 24hrs but no noticeable affect.Wet grass and sunshine here:http://boards.straightdope.com/sdmb/showthread.php?t=573448doesn't sound very practical. Any indoor solutions?

unwarp my cutting board?