Now that is an interesting question!
I think that you are saying that the metal ferrulethat holds the hair has fallen off the handle?
If so, you have already mentioned two good fixes. I think the epoxy or hot glue gun would be okay. My hot glue gun gets pretty... well... hot... So, maybe the epoxy is best.
If you are saying that the hairs are coming out of tthe ferrule, I think you would have a tuff time fixing that. Although, you can always try to contact a big brush supplier like WN and ask for input.
Also, congrats on squeezing all the life out of your brushes.
Let us know what you try.
Keith
