I found an old barbers brush at an antique store; the ones with a wooden handle, a two inch plastic piece securing the knot, and boars hair, for $7. The wood needs to be sanded and refinished but other than that the handle is structurally sound. However the knot is shedding like it has the mange. Any tips or tricks for getting the adhesive and knot off without cracking the handles? This is my first brush restore as I'm more into blade restoration, but for the money I couldn't pass it up. Any advice would be much appreciated.