Well, the wing spar is back in the jig, and has been for about a month. A friend from Wisconsin who is really good with a pencil and a saw came down for a week and we had a good time and got a lot done. Since then, I've installed the intermediate ribs between the main and front spars, and am fitting the leading edge ribs on the main spar.
The yellow hardware is the landing gear. The jig supports alignment strings at the leading and trailing edges of the wing. Everything at this point is about alignment. Of course, by now the position of the front spar relative to the main spar is completely determined by the landing gear. If those are off by a bit, the gear will bind in its bearings, and we can't have that. Also, the spacing between the spar faces needs to be 340 mm with a sub-mm tolerance. All of that worked out fine. But in addition to THOSE requirements, the chord line of the # 4 rib should project upwards to the leading edge alignment string. In the photo below, I have arrows showing the alignment string (it is monofilament line), and the #4 intermediate rib chord line. The ruler clamped to the rib just instersects the string, so this is good to go.
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