16 steps
The sharpness of the rasp and its serviceability are dependent on the type of metal, the pointedness of the teeth and the angle at which the teeth are placed. The production of a hoof rasp consists of about 16 steps, for each of which the rasp is placed on a different machine; the quality is checked during each step of the process. In this manner Heller strives to achieve continuous improvement and perfection. Over time, as a result of wear, the sharpness of the rasp deteriorates. For hoof rasps, in addition to the usual wear, another problem occurs that can considerably reduce the service life.
The teeth of a rasp, in particular the tips of the teeth, are breakable. A broken tip is often not even detectable with the naked eye and only becomes visible under a microscope; nevertheless, this has a significant impact on the quality of the rasp. The more tips that break off, the poorer the quality of the rasp, the more it becomes clogged, and thus the less functional it becomes for the farrier.
