Over the past few weeks Andi and I have been building the second and third pair of wings. We built them in the usual manner: foam cores, with carbon wing spar and carbon D-Box and carbon inserts over the control surfaces and a kevlar triangle over the area with the wing joiner. Andi built the upper sides of all four wings (we always build them “upside down”). We then “closed” the lower side together, after cutting the wiring channels and inserting the various carbon spars. The wings spent 12 hours in vacuum (-1.5 Bar) to cure. The result looks good, especially after an afternoon “sanding session”, where we sanded down the abachi wood on the wings to get an even surface and nice leading and trailing edges.