Scratch board EX scraperScratch board EX scraper You can paint over the scratched white lines with watercolors. This is a high quality scratchboard that allows you to express lines from thin to thick with sharpness. The base paper is coated with two layers of fine white paint, and then coated with three layers of black paint, allowing for delicate expression. It can be painted with paint. This is a full fledged scratchboard that is also used by illustrators and painters.