NOT Baltic Birch, or even the fancy super-sanded stuff from HD. It was over a year ago that I bought this, so I don't recall exactly the grade, but its pretty smooth on one side, slightly less on the other... AB maybe? No repairs, minimal knots, overall pretty good. Im just making simple boxes like for plyometrics. Ill try various oil finishes on some parts just to experiment.... But I figured Id try to get the surface a bit smoother. I can rub my hand on it smooth, and no have any risk of splinters or whatnot... But I want a little more smoothness. I was going to sand the sequence with 80-180 or 220, and then finish with an RO at 220. But is this even salvageable? Ive seen mixed discussions about plywood - no sanding, spackle or bond the surface and sand that, etc... Will those below the surface voids be salvageable? Im guessing its just something to live with given that I didn't buy a fancy type of plywood... I think even 60 or less grit and an aggressive rotating sander might be quite a job. Am I wrong in thinking this? It is what it is, even with the smoother box store plywood?