I have a project which I finished with Tung oil. For the first coat, I slopped it on, let it soak in (end grain swallowed tons!) and wiped off after 10 min.
It seems like the finish is taking a long time to cure. It's been at least 4 days, and I get some slight shinyness on my fingers when I touch the surface of the wood. My impression was that this stuff cured in 48 hours or so.