Adjustment of the scraping thickness in hundredths of millimetres.
The left knob allows varying the thickness of the scrape.
Thus, the surface of the template will be copied, respectively scraped more or less deep into the cane.
Adjustment of the minimum thickness of the scrape.
The right control knob limits the lowering of the sledge and defines the minimal possible thickness of the scrape.
The purpose of this knob is
- to make scraping corrections
- to avoid a tip which is too thin, when the reed is scraped thinner
- to avoid scraping the tongue, when the left knob is put too much towards minus.
Additional scraping on four sections of the reed exactly defined by the aid of the correction segments of the template.
|