Mike Kennedy said:
Love to reticulate some old stock t-max100.
Best done I'd say after processing. Give this a try: soak
the film for two or three minutes in a solution of high ionic
strength, perhaps sodium sulfate. After, place the film in
distilled water at a same warm temperature as the first
bath. As the water rushes in osmosis will cause a build
up of pressure in the emulsion. It will swell and distort.
Dr. M. J. Gudzinowicz has mentioned the method in one of
his posts at rec.photo.darkroom. T-Max is hard to reticulate
due to emulsion incorporated hardeners. Dan