Which of the following is NOT a printmaking technique?

Lithography is a well-established printmaking technique that utilizes a flat stone or metal plate, where the image is created using a grease-based medium. The process relies on the principle that oil and water do not mix, allowing for the selective transfer of ink to paper. As such, lithography is a recognized method for producing prints.

Etching involves using acid to incise a design onto a metal plate, making it another traditional printmaking technique. The design is created by applying an acid-resistant ground to the plate, followed by immersion in acid, which bites into the metal, allowing ink to be transferred from the recessed lines onto paper when printed. This process clearly categorizes etching as a printmaking method.

Wood engraving is a printmaking technique that uses a carved wooden block to create an image. The raised areas of the wood are inked and pressed onto paper, producing a print. This technique has been historically significant in book illustration and clearly fits within the definition of printmaking.