What material and process does MC Escher use to create work?

M.C. Escher primarily worked with lithography, woodcut, and mezzotint techniques to produce his intricate prints. He often used high-quality paper and ink to achieve the sharp details and vivid contrasts in his artwork. His process involved meticulous planning and mathematical principles to create the visually complex patterns and tessellations for which he is renowned. Escher's unique blend of art and mathematics allows for a seamless interplay of perspective and illusion in his works.