Pulp and water are allowed to interact as they do in nature and to participate actively in the shaping of the paper. For example, Ingalls frequently form images by letting the natural flow of water act as a drawing tool. Furthermore, she often lets the drying paper twist the internal metal rods on which the paper is supported. In the sculpture ‘Interference’, telephone and computer cables are caught between layers of different kinds of wet paper. As the drying process proceeds, the shrinking differential between the layers causes the paper to form a highly animated pattern of ridges and troughs.