I am refinishing an old cane rod. I am trying to remove the female ferrule from the butt section. I used heat to try to break the glue bond, I can get the ferrule to wiggle now. I looked down from the top and there appears to be a small wooden wedge driven into the top of the cane to hold the ferrule on. There's no edges so I can't grab it and pull it out. Any ideas on getting the ferrule off?