1 The wings are a big step for this project, and I didnt want to get too nervous about that! Soo, I started small with the rib stiffeners this pix is out of sequence for some reason, and showd the short angle being made on them.
2-- This is how I made them all at once. well known process. nothing to see here!
3 blanks done and ready for edge treatments and bending the flange...see photo 1...!