The tension between the calculated and the unpredictable is one of the delights of printmaking at all levels, from initial tactile experiments with hands and fingers to professional use of a highly versatile, challenging and creative medium. The textural surface of a block, the quality of the colour medium and the surface and absorbency of the paper all affect the quality of the print. Many artists choose printmaking both for the qualities of surface which can be achieved, and for the facility of generating multiple, individually produced, copies of an image. Design is an essential part of printmaking, with planning and predicting outcome and an understanding of the stages of the print process being central to good practice. Each print is a discovery; even professionals experience the excitement of uncertainty each time they pull a print.