We have a patio umbrella that has a winch you turn to open and close. The line that runs from the winch to the umbrella broke, and unfortunately a child kept turning it until the ends were inside the shaft.
Trying to take it apart, I realized that things are held together with rivets, not screws. I want to remove some to get an endcap off, so I can access the mechanism inside and (hopefully) put in a new line.
Suggestions on removing these rivets?
Not sure your specific configuration (and thus limitations for tools and such), but I’ve had a good experience taking a tiny punch and hammering a small river in the middle (to give the drill bit some amount of purchase to start), then drilling out the rivet.
Hope that’s helpful!
Yep, was helpful, thanks! I had to drill out a rivet on each side, but got it apart after that easily enough. And now I can get to what I need to.

