One of our road crews tried to set a brand new 10'x10' canopy up on a windy day. A gust of wind caught it and mangled the frame. Three struts were broken in the center where there is a hole for a pivot. They brought it back and tossed it in the dumpster, so I dragged it out and threw it on my pile of stuff to get around to fixing "someday". Yesterday I got around to it.
Mangled frame.
Broken strut
I took some scrap copper tubing and squashed it down to fit in the oval tubing. It was a bit too big, so I had to slit it and sand it down some.
After sliding the pivot bearing thingy on it I pop riveted the copper and aluminum together and drilled it for the pivot bolt.
Works like new.