Basically the procedure is to rivet the stiffeners to the skins, then match drill the nose ribs to the counterbalance (a very hefty piece of stainless water pipe) and temporarily rivet the ribs and counterbalance together with a couple of pop rivets.
Then you put the whole thing together (along with a couple of minor details like a doubler plate and outboard ribs), put on the nose skin (*VERY* tight fit) and the top and bottom skins, match drill the whole thing, take it all apart, deburr and dimple everything (spar gets machine countersunk), then start assembling.
Simple :)
Match drilled the skins to the spars.
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| From Ailerons and Flaps |
