What is Scratchboard?
"Scratchboard or scraperboard is a technique where drawings are created using sharp knives and tools for etching into a thin layer of white China clay that is coated with black India ink...Depending on the intent of the artist, several areas may be cleared out for layering with watercolors, airbrush or acrylics...Using scratchboard is said to yield a highly detailed, precise and sometimes textured artwork..." (http://en.wikipedia.org/wiki/Scratchboard)
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