Ampersand - Claybord - Flat Panel - 16x20 - This museum quality Claybord Panel is coated with a smooth absorbent clay ground comparable to the clay gesso grounds used during the Renaissance. Archival, lightfast, and acid free, the Claybord panels are ideal for acrylics, gouache, tempera, egg tempera, pen and inks as well as for mixed media techniques, airbrush, and collage. The surface of the Claybord panel is additive and subtractive. Remove paints to add contrast, texture, tonal value and fine details. Perfect for any artwork that requires an extremely smooth surface.