I never whisker more than three times, having scraped and sanded to 400 grit paper. Like Hugh, I use fine sandpaper folded, and popsicle sticks with paper glued on, to get into carving details and the ground adjacent. these can be cut with scissors to get the appropriate shape. I keep clipping off the ends of the sticks to expose new paper. I burnish with 0000 steel wool, a stiff toothbrush, and the end of a 1" manila rope bound tightly just up from the ends. Walnut needs further work: filling the pores. For that I sand wet with tung oil finish and 220 grit paper until a mud is produced which I leave on the wood and move to another part of the stock. I let the mud/finish cure for several days and then sand the whole stock back down to wood, removing the mud from the surface but leaving it in the open pores of the walnut. I often have to do that twice on American walnut, but the result is a flawless surface that is easy to put finishing coats of tung oil on.