I was just given an old 12x15 camera that needs a bit of work. The double bellows is intact and in good shape, it's just as stiff as a board. I haven't tried to pry it apart as I know it will tear.

Anyone have any suggestions on how best to soften it and make it pliable again...at least so I can see if it is usable? It's free from the rest of the camera BTW.