With the priming done, I was able to rivet the spar doublers, spar caps, and the hinge brackets to the forward and rear spars. With my pneumatic squeezer already calibrated (I made a chart with all the various settings), it was a fast and easy set of tasks.
I started by riveting the rear spar doubler. Here it is part way through:
Then I riveted on the hinge brackets:
Then riveted together this part, which contains a bearing:
I clamped it up to keep it square while riveting:
This bolts onto the spar, so I need to get a torque wrench to set these nuts to 28 inch pounds:
Then the forward spar. This has the spar caps, so it’s slightly different. More rivets, and longer rivets. I only got part way through before deciding to take a break for the night: