Replacing a knot on a brush.

[culcreuch]

I'd say your best bet is to leave the glue there unless you're adept with a craft knife. As for chemicals for dissolving the glue, as epoxies and resins fall under similar polymer categories the likelihood is if you try and dissolve one you'll dissolve the other with it. Furthermore, the chemicals you'd need aren't exactly kind to people or plastics of any description. As for the collar I'm not sure but if it were to fit comfortably you might get away with it. See about putting a picture up for others to have a more educated guess.

The Vie-long knot I removed today had the rubber/plastic cap as an integral part of the knot

 

[Nisse]

I have cut loose plastic collars no problemo but only tried it on Zenith boar knots.

 

[Nisse]

and regarding the epoxy:

 

[culcreuch]

The results of my first attempt. The knots are curing....and I will start using them next week. They are not perfect but should be usable. I have 2 more knots on order for other Vie-Long brushes. I am afraid I do not enjoy their horse hair brushes......too much tangling.