A buddy of mine and myself used to refinish antique furniture. He was good at finishes and I did okay at repairing broken or missing parts and caning bottoms and backs. Our method, out of sight of the client of course was simple: Spray the item with water from the hose, or throw it in a pond until the water affected the finish, then spray it down with Easy Off Oven Cleaner, go have a cup of coffee, come back and spray the, EOOC off and let it dry, resand, refinish, recane, return, collect our pay, and start over on the next item. It works for nearly any finish on any wood.