George, my process is pretty much the same as the other fellows have indicated. Since tung oil doesn't provide much surface or uv protection, lots of hybrid formulae have been developed, both shop-made and store- bought. Although they may contain tung oil as one ingredient, they may also contain some varnish (to give it more surface & UV protection), some thinner to help it penetrate, and perhaps a japan drier to speed the set-up and drying. Unlike the straight tung oil, these require less, if any, recoating once the final finish is established.
Years ago I used and liked Fornby's Tung Oil which was one of the hybrids. To improve the finish I would also give it a few coats of rubbing varnish which added greatly to the warmth and depth. Still like the rubbing varnish but it takes time and work to get a nice hand rubbed luster.