Nut Slot Height Guide

Printed from The BadMonkey Workshop, badmonkeymusic.com/workshop/

Nut slot height is one of the small setup details that can make a guitar feel either easy and accurate or stiff and frustrating. It affects the first few frets more than almost anything else, but it is also one of the easiest things to misdiagnose.

Why nut slot height matters

The nut sets the starting point for every open string. If the slots are too high, the player has to push the string farther before it reaches the fret. That extra travel can make first-position chords feel hard, pull notes sharp and make the guitar seem like it needs heavier work than it really does.

Signs the nut may be too high

• Open chords sound sharp even when the tuner says the open strings are right.
• First-position chords feel stiff compared with the rest of the neck.
• The guitar plays better with a capo on the first fret.
• The action looks reasonable up the neck but uncomfortable near the nut.

Signs the nut may be too low

A slot that is too low can cause open-string buzz, sitar-like noise, weak open notes or a string that rattles even when fretted notes are clean. Low slots usually need filling, replacement or a new nut rather than more cutting.

Why this is bench work

Cutting nut slots is permanent. A few strokes too many can turn a simple adjustment into a new nut. The right approach is to inspect relief, fret condition, string gauge and playing style before deciding the nut is the problem.

Bench rule

Do not lower the bridge to compensate for a high nut, and do not crank the truss rod to fix first-position stiffness. Start by finding which part of the setup is actually creating the feel.