I'm trying to remove my rear brake caliper to put a fender/mudguard clamp on. I've removed the rear nut and I assume the brake should then slide straight out. But it won't. It is definitely a little loose, it will rotate freely and has maybe 1mm of play, but even putting a reasonable amount of force on it, it will not slide out of the hole in the rear frame.
What am I missing? I assume I don't need to unscrew the caliper out of the frame.
Edit: Sorry about my woeful care of this question. I meant to put up some photos and explain in more detail, but didn't get around to it :(
In the end I unscrewed the "rear" nut (closest to the front of the bike) a little and tapped it lightly with a wrench and the caliper did come out. Turns out it was just a very tight fit. Thanks!