Not really a warp but a bow. I have a hickory board 1x5x8'. If I lay it flat and pull a string across the face, I have adout 3/4" bow in the board. Both edges are good and parallel. I need to get a small table top out of it, 18x30 oval. My problem is how do you bend a board and get it back flat. Right now I have it clamped to a flat work bench, somehow I don't think that will help my situation. I'm sure there must be a way, I'm just not knowledgeable to know how. Anyone of the pro guys have a way. Thanks again for all the help.