The leading edge was made from a single sheet of 1/2" x 36" balsa cut in half along it`s lenth.</p>

The trailing edge was just 1/2 x 1/2 balsa joined together in the centre with a piece of hardwood and held at the correct height (22mm) with scrap balsa blocks tack glued to the bench.</p>

The spar webbing was also added from hard 3/32 balsa sheet. You can see in this picture where the centre ribs are cut deeper for the spars and where the spar doublers end.
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Unlike the small one, this wing will have to be removable so i added three 1/2 sheet balsa pieces between the two centre ribs to help spread the load of the ply plate for the wing bolt (s) when the sheeting is on. I also added a piece of 3mm birch ply between the centre ribs, mainly for a better fixing for the dowels, but also as a brace on the LE join.
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