English: Kerf is the amount of material removed by a subtractive fabrication machine (e.g. laser, milling machine) in the cutting process. Kerf-Canceling Mechanisms leverage the self similarity of a spiral to lock in place under rotation, independent of the kerf of the cut. On the inside, a flipped version of the same spiral translates the rotation back to a reduced bearing size resulting in mechanisms that continue to work independent of the amount of kerf. For more details, refer to https://hpi.de/baudisch/projects/kerf-canceling-mechanisms.html