years ago, my band had a long-distance gig during the winter, and the truck we used to haul the equipment was unheated. When we got to the place where we were to play, one of the roadies thought he'd help my Les Paul come to room temperature more quickly by putting it on a heater to warm up. When I saw what was happening (too late) I grabbed it and moved it to a more temperate location and opened the case. The finish was shattered like the windshield of a car after a head-on collision.