Heat and moisture tend to be the go-to's for effectively bending wood. Because of the finish, not much, if any moisture will be able to penetrate the wood. Can heat alone, or just a solid rig that provides enough pressure over a long period of time, effectively make a corrective bend to a board after the wood has been finished?
I'm fully aware that pretty much all strategies put the finish at risk, and am hoping for methods that, even if they do some damage can be remedied by some light refinishing without a full strip of the finish prior.
My particular use case is a bookshelf that's got a bit of a warp in it, but I can see other folks having similar issues with any number of projects.