Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.
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.