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These are just pictures of the other side of the spar after the dimples have all been set.
      Next I set several rivets that had to be done before bolting on some of the pieces because of accessibility. In the first picture below, the set rivet – the factory head is on the other side – had to be done before installing the bolt in the hole to its left.  The nut and the angle piece on the other side would not allow the bucking bar to fit.

      The second picture is after I installed the end attachment block.  Before the install I riveted the three set rivets.  The one closest to the nut would be blocked if I had not done the riveting first.