The audio begins with the short, sharp sounds of an engraving tool being prepped. It gradually transitions into the unique, high-pitched grinding noise of the tool being applied to a surface - the process of rapid etching in action. It's a sound that's both mechanical and artistic, reflecting the precision and skill of the engraver. The constant hum of the machine working in the background adds a steady rhythm to the audio. As the engraving progresses, the grinding sound intermittently increases in intensity and speed, highlighting the fast-paced nature of the work. The audio ends with the soft wind-down of the machine, and the distinct silence that follows, leaving behind the echo of the engraving process.