When I am putting an oil finish on a piece of maple burl which usually
has a lot of voids, I will blow it off with the air hose. I think that
I saw this trick in an old Fine Woodworking where the guy was blowing
out the joint between the frame and the panel. It does work on voids
and bark inclusions. Get a rag and the air hose. It won't get all of
the oil (like if there are some spongy parts that will leak oil for a
while), but gets most of it. Wipe the runs up as the air blows it out.
I will usually hit it a couple of times.
robo hippy