Ampersand Unprimed Artist Panels are made of an ultra-stable, non-flexible premium basswood surface and supported by solid pinewood cradles. The surface is sanded completely smooth and is free of knots, seams, and excess wood grains. Ready to seal and prime with your favorite ground, and the sides can be stained or painted as well for a finished look. Ideal for encaustic, mixed media, collage, wood engraving, and all kinds of painting once prepared.