The sound of a worker grinding a piece of metal with a lathe a borer or possibly a threading machine. Aluminium or iron scraping as the device scratches the surface of the object being worked on. Dangerous industrial sound, annoying and persistent. The operator pauses for a few seconds, can loop. Mechanical,
Description: The sound of a worker grinding a piece of metal with a lathe a borer or possibly a threading machine. Aluminium or iron scraping as the device scratches the surface of the object being worked on. Dangerous industrial sound, annoying and persistent. The operator pauses for a few seconds, can loop.
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