I sheeted the bottom of the wing and cut out the ailerons and flaps. The ailerons were easy to cut out in-between the spars I just used a razor saw between the ribs and a thin flat saw on ends. The flaps were another issue. I neglected to add the cut shown on the plans to the leading edge of the flaps when I cut out the ribs. The flaps are basically cut out with small section on the top and bottom attaching it to the end of the ribs. I could have made this cut using a scroll saw before building the wing and this would have made life much easier. Then I would only have to cut a ¼” or so from the top and bottom to free the flaps.
Here you see the bottom of the wing with the ¼” cap strips on the trailing edge of the wing by the flaps. I also added extra gussets in the area of the flaps to give the thin balsa trailing edge more support.
