Printmaking techniques can be divided into four basic categories: relief, intaglio, planographic, and stencil. Relief printing involves a raised surface and includes woodcut and linoleum cut. Intaglio is the opposite, using a recessed surface created by cutting into metal plates with tools. Planographic printing involves a flat surface and includes lithography. Stencil printing uses a screen with a cut design to push ink onto paper. Contemporary artists combine traditional and digital techniques in new ways.