Scratchbord is a clay coated hardboard panel for scratchboard that is coated with India ink.
Comparable to traditional paper scratchboard, except better – it’s more durable and easier to scratch into for cleaner and crisper details and lines. For added dimension, colored inks can be added to the white areas and then scratched again for additional highlights and volume. Artwork can be sprayed with spray fixative like Krylon® UV Resistant Clear Coating #1309 (Matte) or #1305 (Gloss), allowing the finished scratchboard to be framed without glass!
Artwork above by Sally Maxwell "You scratch my back..." Scratchboard on Claybord Black