The two Rutor families Steel and Stone are inspired by the chiseled Art Nouveau inscriptions of Darmstadt's Mathildenhöhe and by the precision and aesthetics of a CNC milling machine. Like a variety of Art Nouveau typefaces, Rutor has a rectangle as its basic shape. An imaginary, freely controllable drill then cuts out the white spaces from the outside in. In order to create uniform word images, the letters are each given a drill radius as a left and right side bearing, which in turn results in a full drill diameter as letter spacing. While Rutor Stone has a floral, classic Art Nouveau appearance, Rutor Steel is very technical and angular. Both families share the same letter width, wich makes them interchangeable. In addition, Rutor is uniwidth, which means that a glyph takes up the same amount of space in all weights and both families.