Right wing skeleton assembly. The ribs are first riveted to the main spar working outboard to inboard. Working solo makes some rivets difficult to set. For the most outboard ribs the rivets seem a bit long and have a tendency to tip over, for the left wing I'll cut them a bit shorter. When all the ribs are done, the left spar is riveted by squeezing, you just have to pay attention to the rivet call-out and location. At the end of the day, turning over the skeleton showed a few rivets I'll have to buck a bit more tommorrow.