Actually the board had a pretty good bow in it towards the one end. Thankfully, the pieces I needed to cut out were only 64 1/4 inches long and I took out some of the bow when I ran it through the jointer to get it to the required thickness. If it were much more than that I would have sent it back. The end that
was supposed to be straight was a little off. Before I did anything I ran it though the jointer and corrected it.
Familiarity: I've used it in several projects