For a smoother surface apply more coats giving a light sanding between coats. This primer produces a sandable film with excellent flexibility. A high pigmentation level gives a pure white ground to work on. If oil paints is to be used, at least three coats of primer is recommended. Black Gesso A ground that dries to a dense matt black finish.
Black gesso is particularly useful when working with a chiaroscuro technique.
This is an acrylic surfacing medium that dries to a porous, paper-like surface. This medium should be applied over an acrylic gesso primed surface. Effects very similar to a watercolour staining and bleeding can be achieved with this ground. Other uses include as an isolation coat between paint and varnish, as a glazing medium increasing translucency, giving collages and increasing film integrity. These gels are available in a variety of grades of gritty textures which dry to a hard film.