the toothed belt is one key part ...... to decouple motor noise from cutting noise.https://algo.mur.at/projects/woodscratcher/media/20120923_fotos_woodscratcher/drive_mechanism.jpg/viewhttps://algo.mur.at/projects/woodscratcher/media/20120923_fotos_woodscratcher/drive_mechanism.jpg/@@download/image/drive_mechanism.jpg
