Response to reticulation tips

A rapid change of pH is usually more effective for reticulation than temperature change, but a combination of both should do the trick.
You need to shock the gelatine from a soft expanded state to a shrunken one. Try a hot (35 celsius) bath of print developer or strong Rodinal, for 5 mins, and immediately dunk into a 4 times normal strength stop bath at 10-15 celsius.
If that doesn't do the trick use a first bath of 5% Sodium or potassium Hydroxide solution. WARNING. This strength of caustic solution should be treated with care, and will completely remove the emulsion if the film is left in it for more than a minute or two.

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