Quote:
Originally Posted by robt57
Just be happy it isn't a concave movement. Is the OSB actually thicker in the middle now? Are you sure the back did not warp and take the OSB with it? To me this is more likely, the back piece shrinking and cupping and the OSB just followed...
Did you throw the straight edge across the back ??
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The whole thing has cupped.I can't see the back moving as it is 75+ years old,but,maybe there was enough moisture in the OSB it took some on.Hard to say.I bit disappointing after all the work I have put into this thing.Like I said,I'm sure it can still be used,just not flat any more.