I begun the long and tedious work of deburring the wing skins. I'll do it in small sessions. In one hour I managed to get the two right underwing skins almost finished. I also drilled to size the holes where the inspection plates will be screwed on.

Today, I drilled the leading edge-fuel tank junction plate, also enlarged the tie-down ring hole.



The I disassembled the leading edges for some minor adjustments. Especially the nose of the ribs needed to be worked upon to get a better position in the skin. On the first picture, there are some "spikes" on each side due to the curvature of the nose. To have a better fit, I enlarged the relief holes a bit and the small falnges could be bend a small amount. On the second picture is the end result. The leading edges have then been reassembled on the spar, waiting to be drilled.

Drilled the fule tank inspection holes. They get drilled with a circle cutter on the innermost rib. The picture shows the finished job. During drilling, the rib has to be clamped down to avid any mishap and a low drill speed has to used (250 rpm).

Leading edges are assembled to the main spar. The first rib is not pre-drilled, so it first gets backdrilled to the spar. Then the fuel tank junction plate is put into position. During the next session I will backdrill the junction plate and the rib, using the skin as a guide.

Assembly and drilling of right wing skins.