I have several shutters of the Copal type from 0 to 1's that are way out of time and hang up due to migrated oil or dust over the decades onto the blades. I have a large ultrasonic cleaner and was wondering if I could place the shutters in a container filled with the appropriate cleaner and set the container in the ultrasound cleaner filled with water. I can also control the temperature as well.
I would like your opinion on using this method and what cleaners would you use?