Join Date: Apr 2009
Location: Charlevoix, Michigan
The tung oil will soften the stain and will lighten where there is more stain build up than where there is little, except where there is little, the tung oil will dilute the stain and lighten even more. Experts have noted that rubbed oil finishes are best for light finishes, if a dark stain is desired, dyes don't thin out when rubbed. However, many a woodworker has mastered the art of "floating" the rubbed finish without disturbing the stain below on dark finishes. That's why the first commadment in finishing is " If you haven't done it before, do several samples on test pieces until you're comfortable with the results, and think you can repeat it on the final piece." So sayeth the Gods of farout finishes.
In the meantime you can thin the tung oil with some mineral spirits and rub it down til the color is uniform... then decide how many coats of stain you are comfortable with. It's nots so far away from the mad scientist approach in the labratory.