Museum Series Claybord is made using 1/8 true artist hardboard and features Ampersand's simply amazing kaolin clay ground formula similar in paint-ability to the clay gesso grounds used during the Renaissance. The surface is sanded to an ULTRA-smooth, highly absorbent finish so your paint colors remain true and brilliant. Work the surface by thinly applying paint or ink, then remove it, reapply it, even scratch through it to add contrast, texture and fine details. Claybord is a favorite of both fine and graphic artists.