They are standard foam with KR Glass on both sides overlapping the spar by a few inches. We then trimmed out the edges and filled them with Flox. I was amazed at how stong they are!
You may notice the problem with image. The filler we used was Micro, Not Flox! We were able to easily peel out the Micro and redo with Flox.
Durring the weekend of 10/24/2010 we glued foam between the spars and on the front and the back for the wing ribs. We also finished our templates for each end. We are going to hotwire all the ribs in one pass of the segmented hotwire we built a few weeks back.
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