About 15 years ago I replaced my interior doors with pine 6 panel doors. I finished them with Tung oil and they came out beautiful.
After 15 years I think I need to refinish them. There are a few scratches and gouges I would like to get rid of. What should I use to prep the doors and clean them before I put another coat of Tung oil on them? How should I treat the scratches and gouges? Can I re-coat them while they are still hung in place? What should I use to apply the Tung oil?