I just installed a chair railing, but I wasn't expecting it to look so unfinished at the end. I'm looking for suggestions on how to create an end-cap or make it look more polished. I'm considering the option of wrapping the railing slightly around the white part of the pillar. The problem is that I glued it down, so I'm worried that trying to remove it will damage the drywall. Any advice would be greatly appreciated! Here's a picture for reference: https://imgur.com/a/2o4Dxsm
2 Answers
You could try doing an end return. It's like what you'd do with baseboards—simple but effective. Just follow the same method to make the end finish smooth and nice. Here's a link that shows how to do it: https://www.thisiscarpentry.com/2014/03/21/nip-tuck-22-12-wall-returns/
But if I try to cut it at a 45-degree angle like that, won’t it pull some drywall off when I pry the piece off?
One option is to bevel the edge with a hand saw, then just prime and paint it to match your decor. This can help give it a more finished look without needing to remove the railing.

I didn’t realize you’d glued it down. I’d still give it a shot—just score the drywall paper and take it slow.