Hello Martin,

Have you seen examples of the mordancage process? There are some here.

The process involves an etch/bleach of a print. If you take it far enough, the edges lift and frill, then eventually the whole of the emulsion layer lifts, but is very fragile and apt to break apart. You can rearrange the emulsion 'frills' to distort the image, and leave them on the same base paper.

You'll get a lot more info if you google "etch bleach process" or "mordancage."