Not sure what kind of WD-40 you use but it was originally designed to protect metal surfaces from rust and corrosion. I use it all the time to lubricate hinges and even the base plate of my racket stringing machine.
Glue, really? Maybe if it's sprayed on a surface and left for days so dirt and other particles stick to it but even then it would be a stretch.
This is somehow worse than taking a drill or dremel to the watch?
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