"D Steck" wrote in message
news
Okay,

I've made some beautiful casings for the dining room window out of
lacewood and coated it with Tung Oil. They look beautiful but I don't
have the glossy or semi-glossy finish that I'd like. Can I go back now
and put urethane with a semi-gloss finish on top of the Tung Oil?

Yes but if you hand rub the Tung oil finish enough and generate some heat
while doing so it too will begin to shine.