We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.
Instrumental

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

How do I Check the Relief (Bow) in my Guitar Neck?

By R. Kayne
Updated: May 23, 2024
Views: 44,837
Share

A guitar neck may look flat at first glance, but a closer inspection will reveal that most necks have a slight forward bow or relief to them. This tiny amount of curvature keeps strings from buzzing against fret tops, particularly when chorded. A truss rod runs internally through the length of the neck to help maintain a comfortable degree of bow. When the truss rod is adjusted correctly and the rest of the guitar is set up properly, it should be a pleasure to play.

It’s a good idea to measure neck relief from time to time, especially if you’ve noticed the guitar has become more difficult to play. It could be that the degree of bowing has increased. This can occur as a result of changing string gauges, exposing the instrument to extreme weather or humidity, or as a result of sheer time. If the neck needs adjustment, it’s easy enough to do. If the neck is not in need of adjustment but the guitar is having problems, you can look elsewhere for the culprit.

To measure neck relief, you’ll need a feeler gauge and a capo. Place a capo on the first fret, then use your finger to fret the E-string (uppermost string) closest to where the neck deepens to join the body. If you have two capos that’s even better as you can keep both hands free. The fretted string will create a straight line or plane, leaving a tiny gap over the fret tops. This gap reveals the degree of bow.

Eye the gap to find the largest space between the top of a fret and the bottom of the E-string. It will likely be about halfway down the neck at the fifth or sixth fret. Slip a feeler gauge into the gap to measure it.

There is no single measurement that represents ideal relief for all guitars. The most efficient degree of bow varies among individual instruments, and is also partly determined by strumming or picking styles and string choice. That said, a general guideline for jazz enthusiasts or those who enjoy fast, light picking might be a gap of 0.004 to 0.006 inches (0.102 - 0.152mm). Heavier strummers, rockers, or those who like lighter gauge strings will probably be happier with a gap that falls between 0.007 and 0.012 inches (0.178 - 0.305mm) to avoid unwanted string buzz.

If the bow gap is excessive, the truss rod can be adjusted to reduce relief and return the guitar to optimum playing condition. If there is no gap at all (i.e. the string lays on the fret tops), the neck is either dead flat or back bowed. A truss rod adjustment can also help in this case. If the rod is already adjusted out, switching to a heavier gauge string might help.

If you decide to adjust the truss rod, re-measure neck bow between each adjustment to avoid over-correcting. Note too that although a poorly adjusted neck can cause string buzz, you might also get buzzing with a perfectly adjusted neck. This can occur if the problem lies in a worn nut, for example, that is allowing the action (strings) to sit too low. Finally, measuring the degree of relief should not be confused with determining the action, or how high the strings sit off the fretboard when unchorded.

Share
Musical Expert is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Discussion Comments
By anon1002200 — On Sep 28, 2019

I don't think that your tutorial sheds any light on bow relief and tension. However, your article has succeed somewhat in giving the impression that what is needed is some kind of dark art or codex by blurring the facts of how to actually set your truss rod. You could have just summed it up as trial and error using the string method.

By ocasek — On May 09, 2011

I own a nylon string acoustic guitar and I find even high-gauge strings sound better with a high degree of bow, if you've got the finger strength to make for it. It might not make a difference if you're finger-picking, but it's never good when you start strumming hard only to hear that dreaded fret buzz.

Share
https://www.musicalexpert.org/how-do-i-check-the-relief-bow-in-my-guitar-neck.htm
Copy this link
Musical Expert, in your inbox

Our latest articles, guides, and more, delivered daily.

Musical Expert, in your inbox

Our latest articles, guides, and more, delivered daily.