Thanx for the effort. I was just thinking if you want to make the 8" shorter wing, that you may as well cut the blanks to the 12" and 6 1/4" dimension right away. Then later try to figure out the angles on the root and tip. It would be a bit more confusing, but you would get almost twice as many blanks from the sheet. Not sure what the span would be exactly, but it would pretty much work out to about 4" shorter each panel.