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The left wing is now in the stand. This feels like a huge step.
First I re-examined the riveting on the front spar from last night. There were two more rivets that I wasn’t happy with. I drilled those out, and then re-riveted. I realized that I was using too high of a pressure with the rivet gun last night. That might have been part of the problem.
With the front spar done, I moved on to the rear spar. To keep myself from making stupid mistakes (that I’ve made before), I marked the holes to leave empty with masking tape. These holes are used later to rivet on the flap brace or aileron gap fairing.
This shows the finished product. One note to watch for: check the rivet lengths. I found that the -8 rivets that the drawings called for at the root end were not long enough. I went with -9 and they worked great.
Drilled two holes in the outboard-most rib to attach a short piece of angle that attaches to the wing stand brace. This sound complicated, but it’s really quite simple. I should have taken a picture. The root end just gets clamped on. Used a laser level on a row of holes on the front spar to determine how much to jack up the middle. A string would have worked fine, but a laser is more fun.
Hung a plumb bob off of a cleco at the root and outboard end to make sure there was no twist in the wing.
Put a few shims under one side to even it up. There is less than 1/32″ twist along the ten foot span.
I pulled out the skins and placed them in their proper positions. Started to cleco on one skin, but I’m beat. I’ll leave that for later. Plus, I should put some braces on the bottom of the stand to hole the rear spar secure.