My Dart Swinger Project!

With the apple cider you have to neutralize it after it removes the rust. Or if you use the wash soda with the battery charger all you have to do is wash it off.
The apple cider vinegar will continue to eat at the medal if you do not neutralize it. The wash soda will neutralize vinegar. Isn't that neat.
Once you pull the heads out and wash them off after being neutralized you want to dry them quickly and spray some PB Blaster on them.