The article explores how German Surrealist Max Ernst developed the techniques of frottage and grattage in the mid-1920s. Frottage—rubbing paper over textured surfaces like floorboards, leaves, and netting—allowed Ernst to create spontaneous, unconscious imagery, culminating in his 1926 publication *Natural History*. He later adapted the method to canvas as grattage, scraping layers of paint over textured materials to reveal abstract forms, drawing on influences from Leonardo da Vinci and memories of his childhood in the Rhineland.
This story matters because it illuminates a pivotal moment in Surrealist practice, where chance and the unconscious were harnessed to challenge traditional painting and rationalism. Ernst’s techniques influenced contemporaries like Jean Arp, Salvador Dalí, and Joan Miró, and exemplify how personal trauma—Ernst’s experiences in World War I—and innovative methods can reshape artistic expression. Understanding frottage and grattage offers insight into the broader Surrealist project of liberating creativity from convention.