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Refine suitable fret crowns with a diamond-grit file and four groove widths. A wooden handle guides the file while two protectors cover adjacent fingerboard areas.
✅ Match different fret widths - Four grooves provide contact profiles to compare with the fret being shaped.
✅ Work a rounded crown - The diamond-grit surface supports appropriate crown-shaping passes along the fret.
✅ Cover the nearby fingerboard - Two included protectors provide a layer over the surrounding working area.
✅ Guide the filing movement - A wooden handle gives you a separate grip during each pass.
Check the groove before shaping the crown
A crowning file needs the right groove around the fret so the contact matches the intended work. Compare the smaller or wider grooves with the fret before preparing the filing arrangement.
Position the protectors appropriately and use controlled passes within a suitable fret-maintenance process. Check progress as you work, preparing the instrument and other finishing tools separately from this file-and-protector package.






Technical details
- Groove widths: 1.5, 2, 3 and 4 mm
- Surface: diamond grit
- Approximate overall size: 227 × 20 × 20 mm
- Includes: one file and two protectors
- Instruments and workshop props not included
Match the groove and prepare controlled fret-crown finishing.
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