I am making a dining room table. Walnut as you may guess. Being in the open pore family of woods, I read that many use a pore filler to smooth it out and give the finish a smoother, richer, possibly glossier look. I have made walnut end tables, coffee tables, etc. and never used pore filler but am looking for some guidance/experience. Is it worth using? What brand? Application techniques? Any and all comments welcome. My finish will be a Danish Oil followed with some clear poly. Thanks for any and all help.