The term collagraph stems from the Greek, "colla" being derived from the verb "to glue". Typically a collagraph is composed of layers of materials that are glued or attached to a substrate. In this video tutorial, Joyce Silverstone teaches you how to make a collagraph by adhering carborundum grit to Petg plastic plates with rolled or painted acrylic mediums. 

Using a variety of acrylic mediums with or without carborundum, these plates can hold a wide range of values; from gritty deep dark spaces to washes of light tone. The materials are applied directly to the surface of the plate with brushes, hand-made stampers, or rolled through cloth or stencil shapes. These plates are open to drypoint additions that can increase the definition and texture of the image.  Unlike traditional cut and paste collagraph, these carborundum/acrylic collagraphs have a painterly look and feel.

The video tutorial covers materials, plate making, wiping techniques with different inks, and printing both on an etching press and by hand.