I found this really nice piece of Burl Maple. Like extremely unique and I was wondering is it hard to finish and possibly stain if I had to (but probably not.) I would probably be using a oil based Varathane Polyurethane Gloss finish and applying it by a horse hair brush, if it matters...

Last edited by GuitarzMyThing at Nov 11, 2011,
Don't use the poly. use laqueur. poly can be too thick especially with a brush application. buy some nitro laqueur in a can and spray.
If there are lots of small knots with holes/voids, then yes. You'll need to fill them before you apply the finish. If you're using a poly finish, you can just fill them with superglue. I'd advise not brushing on the poly though. I've finished burl maple with wipe on poly and it turned out great.