After noticing that the inside of my box picked up some color right through the Danish oil finish, I decided to experiment. I finished an oak stick with one coat of polyurethane varnish (right) and Danish oil (left). I left the center unfinished. The oak darkened nicely beneath the finishes. The Danish oil appears a bit darker than the varnish, but the image exaggerates this somewhat. Nice to know that you can sand and put at least one coat of finish on before fuming. I’d test it out first though, before trying this on an actual piece.