Greg Esres wrote:

Paint thinner....test an inconspicuous spot first.

Thanks for your reply. I had already tried Turpentine and, as far as
I can tell, it had no effect on the dried Tung oil. Maybe if I heated
first, as the other poster suggested?

You could try...if it's a thick blob you might gain something.

You could try one of the citrus-based solvents. Again test first,
obviously.

I'd suggest looking at the manufacturer's page and seeing what is used
as a solvent for the particular material. If it doesn't have any
cleanup suggestions/recommendations, you could probably contact them.

Can't say as I've ever actually had the problem...