collagraphs
Yesterday I went to a workshop on collagraphs using carborundum. Carborundum is used in lithography and is fine pumice dust. In collagraphs it's used to create wonderful darks, where the carborundum grips the ink and creates intense colour. This is one of my favourite methods of printmaking - I love the painterly qualities you can achieve with it. It won't make as many prints as an etching but enough for me. The printing plate (shown left with traces of ink left on them) is made with Daler Rowney mountcard. Simple lines cut in with a craft knife will print as thin line, for thicker lines 2 cuts are made and the top layer of the paper between them is peeled away. Areas of darkness are created by peeling away the top layer, light areas are created by painting with wood glue and the very darkest areas are created by painting with wood glue and covering with carborundum. When the glue is dry, the whole plate is sealed with shellac varnish (brushes cleaned in methylated spirit). Wh