how to change guitar nut

Guitar Nut Replacement

Nut Function and Composition

The nut is a small, precisely fitted component at the headstock of a guitar. It sits between the tuning pegs and the fretboard, guiding the strings and determining string height and intonation at the nut. Nuts are typically made from materials such as bone, plastic (often graphite-infused), brass, or composite materials, each offering different tonal characteristics and longevity.

Identifying Nut Issues

Problems requiring nut replacement often include: excessively high action (string height at the nut), uneven string height, buzzing or fretting out of strings near the nut, damaged or worn nut slots, or improper string spacing. Careful inspection under magnification can reveal subtle wear or damage.

Tools and Materials

  • New guitar nut, properly sized for the instrument's string spacing and nut width.
  • Nut files (various sizes for shaping the slots).
  • Precision measuring tools (ruler, calipers).
  • Screwdriver or other appropriate tool to remove the old nut (if necessary).
  • Fine grit sandpaper (for final polishing).
  • Guitar string lubricant.
  • Super glue or epoxy adhesive (depending on nut material).
  • Small clamps or weights (to secure the nut during curing).

Nut Removal and Installation

Removing the old nut may involve carefully prying it out using a suitable tool, ensuring minimal damage to the headstock. The new nut must be accurately positioned and fitted to the nut slot in the headstock. Use adhesive to secure it. Once the adhesive has cured, the strings should be carefully re-installed. Each string slot should be carefully filed to the correct depth and width, ensuring smooth string movement and preventing buzzing or other issues.

String Slot Shaping and Final Setup

Precision is key when filing the string slots. Incorrectly sized slots can lead to intonation problems and poor playability. String height at the nut (action) should be carefully adjusted. Following the installation, a complete guitar setup, including intonation adjustment, may be necessary.

Nut Material Selection

The choice of nut material influences the tone and sustain of the instrument. Bone is a popular choice, offering a warm, balanced tone. GraphTech TUSQ and other composite materials offer durability and consistent performance. Brass offers a brighter sound and excellent stability.