Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for adjusting facial image search results. The workpiece is clamped on the tool holder of the work spindle of the machine tool, the tool is clamped in the clamp of the machine tool, and the workpiece clamped in the tool holder of the work spindle is controlled in a program-controlled manner in relation to the tool clamped in the clamp for removing material from the workpiece. Each of the supports supports a string of the associated stringed instrument, wherein each of the string supports includes a surface configured such that 1 degree of rotation of the support in relation to the base results in a change in length of the string equal to l, a constant, multiplied by the change in length of the string that resulted from the preceding 1 degree of rotation. The second peripheral edge is positioned generally opposite the first peripheral edge of the towel. Each of the plurality the hand mounts includes at least one contact element.