I just recently posted a question about the possibility of selectively bleaching selenium toned prints and knifing or etching was recommended as the better option.
In selenium toning over the past couple of days, I dumped the used batches into a bucket and then shoved a bunch of non-washed test prints in to thoroughly exhaust the toner before disposal. I decided to keep some of these really messed up and stained rejects because I thought they looked interesting - but only got to wash them and dry them today. Lo and behold, they've been wet so long the emulsion started sloughing off the paper in areas.
Now, my question is, has anyone ever tried to do this on purpose and selectively? It seems like if it was possible to control it could possibly have softer edges to work with and would seem less scary than taking a scalpel to a finished print (?). Maybe there would be a way to locally waterlog a print? Or is this just an absolutely ridiculous and absurd hypothesis?
I've only ever spotted/spot-toned, never tried to remove dark spots - which is what I'm faced with now on several prints. In discovering the slough accidentally, I thought I'd throw it out to everyone and see what peoples experiences or thoughts might be.