What would be a durable way to fill in inclusions like the ones in this piece of walnut. I don't own this piece but I have some smaller walnut slabs that I'd like to use for a living room coffee table that has similar inclusions.
I haven't decided on a finish for the table top so, if filling them in was part of finishing the top that wouldn't be a bad thing. (Actually, I haven't even given any thought to finishing the top so suggestions would be welcome as well.)
Thanks very much.