This term – related to the word collage - includes a variety of methods used by artists to create a printable surface. Here you can see collagraphs* printed from wood, card, cloth, thick paper and metal. (* see Publications section)
The main process here is papermaking. Sometimes sheets of varying colour are formed from different coloured pulps and there may be additional printing from wood or metal. Papercasting involves the damp paper drying on a textured surface so that it takes up the texture of that surface.
Etching* means that diluted acid has been used to erode the surface of zinc, steel or copper prior to printing. There are also prints from the surface of perforated metal or gauze and others where materials have been glued to a metal base plate.
(*see Resources section)