QA

How To Adjust A Truss Rod On An Electric Guitar

Which way do you turn truss rod to lower action?

Remember in a single action truss rod: tightening the rod (turning clockwise) straightens the neck, loosening (turning anti-clockwise) permits it to bow.

Do you adjust truss rod with strings on or off?

To avoid any problems, loosen your strings before you make adjustments to your truss rod. What is this? If there is a back bow or you’re experiencing buzzing frets, it means you need to loosen the truss rod. Loosening the truss rod will allow the strings to create more pull on the neck.

How do I know if my truss rod needs adjusting?

If you hear buzzing, or if the fret fails to sound a note, then your guitar neck has bowed upward toward the strings. This means that you need to loosen the truss rod. Grab yourself the appropriate Allen key and give it a turn to the left.

Can I adjust the truss rod myself?

Not as dangerous as it’s traditionally fabled to be, just make small adjustments and check as you go.

Does tightening truss rod lower action?

A truss rod is NOT for adjusting action. Despite the fact there is information around the web telling readers to adjust their truss rod to raise or lower action, a truss rod is not for adjusting action.

How long does it take for a truss rod to settle?

It can take a day or two for the neck to fully “settle” into an adjustment. You’ll certainly see some neck movement immediately after making a truss rod adjustment, but wait overnight to see the full effect, as the wood continues to slowly bend into its final position.

What tool do you use to adjust a truss rod?

The tool needed for this adjustment is a 1/4″ ‘nut driver’ wrench available at any hardware store such as Ace. They used to be small enough to fit, but recently many driver brands seem a little too large and some grinding on the outside diameter may be necessary.

Which way do you turn the truss rod to raise action?

The types of forces that act on a truss rod are compression, tension, and torque. Loosening a truss rod (turning counter-clockwise) adds relief to (decreases tension on) the neck which results in increased (higher) string action height. Loosening the truss rod is done to correct backbow.

Should guitar neck be perfectly straight?

Guitar necks are supposed to be as straight as the guitar can handle, however, not every guitar is capable of having a straight neck without intonation issues, fret buzz, or unwanted noises. A straight neck is in between a convex (too much relief) and a concave curve (backbow).

How do you test a truss rod?

It should barely sit above the fret but not be touching it. If there is no distance at all and the string touches on the fret, you will have to add relief by loosening the truss rod. If there is a large gap between the string and the fret there is too much relief and the rod should be tightened.

Can you turn truss rod too much?

Tightening the truss rod pulls against the string tension. So if your neck is bowing forward because of the pressure with which the strings are pulling, tightening the truss rod can pull it back to straight. Don’t turn it more than one quarter turn at a time.

How high should the action be at the 12th fret?

Measuring at the 12th fret (as in the photo), the action height should be 2.6 mm for Steel String Acoustic guitar, 1.8 for electric, 2.0mm for bass and 3mm for a Classical.

How tight should a truss rod be?

Typically, a properly adjusted truss rod will leave a neck with a bit of forward relief. You can use your strings as a “straight edge” by pushing them down to both the 1st and 14th frets simultaneously. Then the gap between the string and the 6th fret can be observed.

What happens if you over tighten a truss rod?

If you over-tighten the nut, however, you can cause damage. If the nut has been tightened to the end of the threads on the truss rod, then continuing to crank it can strip the threads out of the nut or off the rod. In worst-case scenarios, I’ve seen the threaded end of the rod completely break off in this situation.

How long does it take to adjust a guitar?

It depends on the design of the guitar, its condition, and whether or not something needs to be changed. On a new guitar, it shouldn’t take more than a half an hour to slightly adjust the bridge saddles to fine tune the intonation and playing action, and to adjust the truss rod if needed.

Can you adjust truss rod with allen wrench?

Most modern guitars have an Allen bolt that is adjusted with, you guessed it, an Allen wrench or key. When you’re adjusting the truss rod, make sure the Allen key is seated properly in the truss rod nut; push it all the way in. If you don’t, the nut can be damaged when you try to turn the wrench.

What is guitar neck relief?

Neck relief refers to a small amount of concave bow intentionally created in the neck of a guitar or bass by adjusting the truss rod. Adding relief (increasing the amount of bow) to the neck, increases the space between the strings and the frets, allowing them to vibrate freely without buzzing.