Finishing my stair treads and risers with clear polyurethane. I sanded
up to 220 and the surface was very smooth to the touch. After 3 coats of
poly (4 coats on treads), the touch isn't really smooth. I can actually
fell parts of the grain and was wondering if that's normal or not.
Perhaps I'm expecting a smooth glass like touch to finishes such as
shellac or lacquer but uncertain with poly. Is this normal? If so, what
are opinions about lacquer over a poly finish?

Thanks