Ruth describes WallFold as a "Physical Sculpture" that tries to generate an ambiguous spatial condition. Smooth and flexible folds between inside and outside, open and close. The space thus becomes continuous and dynamic. The installation uses six pairs of servomotors connected by flexible bands to create a smooth surface. The motors alternate between two positions (0 degrees, 180 degrees), stretching the binary ON/ OFF positions into a continuous transition, a whole grayscale or gradient between 1 and 0."