A diamond-edged or diamond-impregnated rotating disc used to cut grooves and remove marble rapidly during roughing and finishing.
Disco diamantato is a diamond cutting disc used extensively in modern stone carving. Le voci del marmo documents its use during sbozzatura, often in combination with the scapezzatore and subbia.
Etymology
Italian: disco, “disc,” + diamantato, “diamond-coated.”
Sculptor Notes
The disc is most powerful when used to define waste with deliberate kerfs before chiseling it away. Cutting depth, disc orientation, and awareness of hidden stone defects are critical.
References
https://levocidelmarmo.sns.it/lista_video.php