Is the Zinsser BIN Shellac primer sandable?
Pigmented Shellac like Bins is a great stain blocking primer. We use it for many purposes, bare wood, worn wood cabinets smoke and water damage etc. Bin's is very sandable and should be sanded between coats. When you apply it, work fast, get it on as even as you can, but do not try to over work it. It flashes fast and trying to overbrush partially dried bin's will cause it to curl and drag. Shellac sands very easily and boo boos can be fixed, no problem. I often use two or even three fast coats of Bin's on old wood cabinets, sanding lightly between coats.  If you feel the surface before and after sanding gently  with 400 grit paper, the difference is amazing. Sanded shellac will be extremely smooth and a great base for cabinet grade latex paints. Don't use cheap paint, get a cabinet grade, it makes all the difference in the world with filling and smoothness.  So use Bins, sand it and you will get great results.