I have bought some second hand paper, and every now and then, some "pre-exposed" packages of paper are delivered/by-packed. Most of these papers were good quality, ORWO or Ilford double weight, bigger sizes, and it would be a pity to just dump them.
I was thinking it might be possible to fix these papers (without developing) and then use the gelatine coated papers for cyanotypes or another form of "alternative process". Is that possible, will the gelatine absorb the cyanotype chemicals, or will it all wash away? Does anybody have experience with that?