Which printmaking technique involves attaching materials of various textures to a surface?

The printmaking technique that involves attaching materials of various textures to a surface is collography. This method allows for a wide range of textures and effects, as artists can use a variety of materials—including fabric, paper, and found objects—to create a relief surface. When ink is applied and pressed onto the plate, the uneven textures result in unique prints that capture the character of the materials used.

Frottage, while it does involve texture, specifically refers to the rubbing of a pencil or other tool over an uneven surface to create an image, rather than directly attaching materials. Stamping typically uses a pre-made image or pattern applied to a surface, while mezzotint is a copper engraving technique involving the manipulation of a plate to create tonal variations, which does not involve attaching different materials. Thus, collography is distinctly characterized by its innovative use of various textures to generate its prints.