The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.
Crush some ice cubes and put them into a wash cloth and wrap it around the male ferrule, then get another wash cloth and pour boiling water onto it and wrap it around the female ferrule.
How do you wrap the cloths around the ferrules if they are together?
I tried the all the suggested methods but none seemed to work until I wrapped the two pieces with a rubber exercise band and it twisted apart immediately with almost no effort.