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You are here: Home / Guitar Care Tuning Restringing / How to Lower the Action on an Acoustic Guitar

How to Lower the Action on an Acoustic Guitar

Last updated: June 26, 2018 by Nate 4 Comments

lower the action on an acoustic guitarThere are 3 main ways that you can lower the action on an acoustic guitar.

This page will cover those three ways which are;

  • truss rod adjustments
  • nut adjustments; and
  • saddle adjustments

If you are looking to learn how to do this for yourself then this article is for you. However, if you just want your guitar’s action fixed and are willing to pay someone else to do it, this is something that can be done by a professional luthier or your local guitar store.

If you are doing this for the first time I would suggest, if at all possible, to do this on a cheaper guitar first.

Contents hide
1 The Order
1.1 Difficulty and Consequences of Getting it Wrong
1.1.1 Truss Rod Adjustment
1.1.2 There are a couple of different ways to adjust the nut
1.1.3 The Saddle is the Easiest
2 Truss Rod Adjustments
3 Adjustments to the Nut
4 Adjustments to the Saddle
4.1 Thanks for reading

The Order

The order is important because adjusting the truss rod will affect the action at both the nut and the saddle. In turn, adjusting the nut will affect the action at the saddle.

So it’s important to start with the truss rod (assuming it needs doing) and then if any more adjustment is needed then move onto the nut (assuming in needs doing) and then if any more adjustment is needed then move onto the saddle.

To learn more about what causes action to change, how to tell if your action is too low or too high and some standard action heights check out the link below.

  • When Do you Need to Adjust the Action on an Acoustic Guitar

Difficulty and Consequences of Getting it Wrong

The most difficult of the 3 adjustments is probably the nut adjustment – but the Truss Rod adjustment has the biggest consequences if you get it wrong.

Truss Rod Adjustment

This is not the most difficult but it has the most impact if you don’t get it right – and in my opinion is the scariest!

If you don’t adjust it correctly this will not only affect your action but also your intonation. Not to mention the risk of warping the fingerboard or twisting the neck. The actual adjustments aren’t too tricky but you’ll want to get these right so measure as you go and only make small adjustments before re-measuring.

There are a couple of different ways to adjust the nut

Adjusting the nut involves filing the nut or sanding the base if the nut. Filing requires special nut slot files – this method will be the trickiest and costliest do-it-yourself method. Sanding the nut means you have to remove the nut which is glued on but is ultimately easier and there’s is less chance of getting it wrong.

The nut is still the most tricky of the 3 adjustments, regardless of the method you use.

The Saddle is the Easiest

The saddle usually sits loosely in the bridge so is easy to remove – therefore replacing it with a new one if you make an error isn’t too difficult – assuming the replacement saddle fits properly in your bridge.

And the lowering process is pretty easy and doesn’t require much in the way of tools/materials.

So if you are wanting to lower your action, and your neck and nut are looking good, then congratulations this shouldn’t be too difficult!

Seriously though, with a bit of practice all 3 of the adjustments can be learned.

Truss Rod Adjustments

truss rod adjustmentsThe first step in adjusting the truss rod is to see if it needs adjusting. If it doesn’t need adjusting leave it well alone.

If it does then it is the first thing you need to deal with before looking at the nut and saddle.

Check out the link below to learn how to tell if you need to do a truss rod adjustment and how to go about doing it.

  • How to Do an Acoustic Guitar Truss Rod Adjustment

Adjustments to the Nut

If your neck is set just right and you don’t need any adjustments, or if you have already adjusted the neck, then it’s time to check the nut.

unbleached bone guitar nutIf no adjustments are needed at the nut end of the guitar then you can move onto adjusting the saddle to lower your action.

But if you do need to lower the action at the nut end then you should do this before making any adjustments to the saddle. Why? Because any adjustments to the nut will also affect the guitar further down the fretboard – and you may not need to adjust the saddle at all.

But if you adjust the saddle and then adjust the nut you may end up being too low at the soundhole end of the fingerboard which may result in needing to replace the saddle.

To learn when it is necessary to adjust the nut and how to do it check out the link below.

  • How to go About Adjusting The Nut On A Guitar to Lower the Action

Adjustments to the Saddle

buffalo bone bridge saddleRight, so either your neck and nut didn’t need any adjustments or you have already made any necessary adjustments to the neck and the nut.

But your action still isn’t quite low enough?

If that’s the case then you will need to lower the saddle. This is the easiest adjustment of all three so you’re in a good place now!

If you haven’t checked the neck and nut for any adjustments or haven’t made those adjustments then go back and do that first.

If you are ready to learn how to lower the saddle then check out the link below.

  • How to Lower The Saddle On An Acoustic Guitar

Thanks for reading

I hope this page, and related pages, has helped you learn how to lower the action of your acoustic guitar properly.

If you have any further tips on lowering the guitar or have any questions or comments it’d be great to hear from you in the comments section below.

Filed Under: Guitar Care Tuning Restringing, Setup

Comments

  1. Rich says

    February 26, 2017 at 9:36 am

    Very helpful thanks

    Reply
    • Nate says

      February 27, 2017 at 4:40 pm

      Hi Rich – you’re very welcome. Glad you found the post helpful.

      Reply
  2. Jeff says

    December 20, 2017 at 5:41 am

    Thank you! I’m really glad I came across your site! I have signed up for guitar lessons starting next month. I’m trying to learn guitar terminology and such before the class starts. Hopefully my 68 year old fingers can do it.

    PS. There is a small typo in the “Difficulty and Consequences of Getting it Wrong” section. What is probably suppose to be “nut adjustment” was typed as “but adjustment.”

    Reply
    • Nate says

      December 20, 2017 at 2:18 pm

      Hi Jeff

      Thanks for your message and thanks for pointing out that typo! Have corrected it now.

      Glad you got some useful info from the site and awesome that you’re learning guitar!

      Reply

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