Leading edge Wing skins

These are the leading edge wing skins.Notice the bend. Just as they were for the tail skins, they are only bent at the factory to a certain point point. They are then pulled and clamped over the skeleton and riveted into place. I am very intrigued by the method and math they use to determine just how much bend to apply to these parts, and even more intrigued with the equipment and methods used to do this sort of thing at the factory. I see a trip to Oregon sometime in my future.......