We are finding that the warpage/bowing seems to be related to the sawing that was done to cut our stock to the desired size. Our efforts (facing both sides) so far are yielding a bow of approx. .007" on the 72.5" length. This leaves us with only .03 to finish the height -- it is looking pretty good at this point (or at least good enough that we can proceed with the finishing ops.)
Drawing calls out .010 Flatness over the length. |