I'm interested in how to remove one capped screw from a skylight frame too. My issue is the screw is no longer holding (pictured) it is spinning but won't come free of the frame. I'd like to get it out without damaging the frame and then replace it with a wider diameter or try reestablishing the existing screw so that it holds the corner in place. The 3 other capped screws are holding fine. Happy to hear how your project goes. Nancy
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