A high-speed compressed-air rotary tool used with small abrasive or cutting attachments for precise refinement of marble.
Turbina ad aria compressa is a compressed-air rotary turbine used in marble finishing. Le voci del marmo documents both larger and smaller turbines, including precision finishing applications.
Etymology
Italian: turbina, “turbine,” + ad aria compressa, “with compressed air.”
Sculptor Notes
Its value lies in access and control: small rotary tools can reach recesses and transitions that are awkward for large grinders. Their speed also means they can quickly dig unwanted grooves if allowed to linger.
References
https://levocidelmarmo.sns.it/lista_video.php