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Polishing the guitar saddle: Used to polish the guitar saddle, making its surface flat and smooth, enhancing playing comfort and sound quality. Filing the saddle string slots: Can be used to adjust and polish the string slots on the guitar saddle, ensuring smooth string operation and reducing performance interruptions. Deepening the filing knife for polishing: Used to deepen the cut of the string slots on the guitar saddle, allowing the strings to embed more firmly, enhancing the clarity and stability of the sound. String adjustment: Suitable for adjusting and polishing the guitar strings, ensuring a smooth surface and extending the lifespan of the strings. Maintenance and upkeep: As a musical instrument maintenance tool, it can be regularly used to maintain the good condition of the guitar saddle and strings, extending the instrument's lifespan. Enhancing playing comfort: By using the polishing tool to adjust the guitar saddle and strings, it enhances playing comfort, reducing discomfort caused by uneven saddle or worn strings. Improving sound quality: Adjusting the guitar saddle and strings can improve the sound quality of the guitar, making the tone clearer and brighter, enhancing the playing experience. Maintaining the instrument in good condition: Regular maintenance of the guitar saddle and strings can keep the instrument in good condition, prolonging its lifespan and increasing its resale value.