Pictured below is the roof-peak of an ornamental 'birdhouse', with a failed hanging 'eye'.
When I see things like that I wonder, "Why did they even bother?"
That 'eye' for hanging the thing is just a bit of twisted wire that was force-fitted into the peak of the roof. It couldn't possibly last. I'll replace that with a proper screw-eye, installed with epoxy in the hole, and smeared on the screw-eye's threads.
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And here we are. A No. 7 screw-eye with a 1/2" threaded length fit nicely, and the addition of five-minute epoxy seals and secures the screw-eye's thread in that end-grain installation. (End-grain screw thread installations are always an iffy proposition -- best avoided if possible.)
It's also a good idea to add a swivel, as I've done here. The swivel ensures that torque forces don't get applied to the screw-eye when there's a wind blowing; the birdhouse is free to spin instead.
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And here is is back on its hook in the garden.
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