I have had frilling on my dry plates over the years.
the emulsion lifts off the plate and creases and sits down again or it’s brittle and cracks. It happens when the gelatin in the liquid silver emulsion doesn’t completely adhere to the glass (or whatever) plate.
this is a 5×7 dry plate I made a few years ago. I coated the plate and put it on a very cold stone (pizza stone) and the emulsion sticks very well to the plate. but sometimes years later well …
as you can see hte emulsion on the left had trouble, the emulsion on the right seems fine, but in a few years maybe not.
