1-- the tip rib is a strange duck in that the top flange is about 135 degree bend in board and the bottom is about 45 deg inboard. with fluting dimples. I had to construct a new former and that took more time than I expected This is the first one built, and I hope it will fit the wing when I get that far. The second and last one will be easier, and I hope it fits too! All that test fitting will have to wait the main and rear spars, and the expensive spar caps. Not in the budget just yet, so...maybe later this year if I am a good boy. Fat chance you say!!??