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After I inserted all the rivets, almost 300, I covered them all with tape to hold them in place.  I just used 3M painters tape and it worked great in the test and after doing some real ones.

      I decided to hold off riveting until today, but went ahead and finished work for the day by installing all the hex bolts and flat head screws, about 25.

      These pictures show the various pieces that get bolted on.  A couple of the angle pieces get bolted and riveted, one is in the second picture.