# Guitar/Adjusting the Guitar

Many beginning or even intermediate guitarists are unaware that their
guitar should be `<b>`{=html}\"set up\"`</b>`{=html}. The adjustments
described in the adjustment subsections below (along with restringing
and tuning) are called a `<b>`{=html}\"set up\"`</b>`{=html}.

# What difference does a set up make?

When a guitar is set up properly:

-   the guitar will feel and sound its best
-   all the strings will sound with exactly the notes they are supposed
    to
-   all notes will sound correct when played at each fret up and down
    the neck
-   the guitar will be as easy as possible to play
-   strings will break less frequently.

If a guitar plays easily and sounds its best then it\'s easy for the
player to feel successful.

When a guitar is not set up properly:

-   the guitar may not feel or sound quite right
-   some notes may sound correct while some others may sound sharp or
    flat
-   the guitar may be difficult to play
-   strings will break more often
-   damage to the instrument could be incurred unwittingly by the player

## When to Set Up?

When a guitar is brand new and fresh from the factory it may or may not
have had these adjustments done. As a rule, a guitar should be set up
when first purchased (used or new) and again when switching string
gauges. Consider getting a set up anytime the guitar sounds or feels
different than it used to. Perhaps after a guitar travels (altitude
changes, pressure changes, and humidity can affect the wood in the
guitar) and just like changing oil in a car it is a good idea to get a
set up every now and then for maintenance purposes (perhaps twice a
year).

Poor set up may be obvious to a player or it might not. In some cases
the guitar may be unplayable because it hasn\'t been set up. A
maladjusted guitar can cause strange quirks, for instance frets near the
bottom of the neck being too sharp, or can even cause damage (e.g., by
using .012 gauge strings on a nut designed for .009 strings, and the
tension messes up the nut), and it can easily frustrate the player when
their playing is perfectly correct yet things still don\'t sound right.

In particular if your guitar ever becomes difficult for you to play, a
set up will probably help.

It is not absolutely *required* to set up a guitar, but it is
nonetheless a good idea, *especially* if the guitar is to be taken to
the stage. Some people never get their guitar set up. Some get their
guitar set up even when nothing previously seemed wrong with it, then
find such a dramatic change in the guitar\'s playability and sound that
they wish they had set it up sooner.

## How to get a Set Up

These adjustments should generally be done by a professional, qualified
repair person. They require precision instruments, some hard to find
tools, a steady hand, quite a bit of time and know-how.

Virtually all musical instrument stores will be able to perform a
professional set up. Some will do the job better than others. Call a
local music store and ask them \"Do you do set ups for electric (or
acoustic) guitars and how much would you charge?\". Getting a set up
will probably cost from \$30 to \$75 USD.

# Adjustments

## Adjusting action at the bridge

This is a simple adjustment that can usually be performed without
professional assistance. The bridge saddles should be lowered if the
string action is too high, that is, the strings are too far up off the
fretboard. In some cases it may be desirable to raise the saddles for a
higher string action.

Most electric guitars have two small screws on the saddle which can be
used to raise or lower the saddle. Some saddles have screws that can be
rotated using the fingers; others require an allen key. Lower the
saddles too much and the strings might rattle against certain frets
(this may or may not be inconsequential on an electric guitar; listen
through an amplifier). In more extreme cases, pressing a string against
one fret might actually fret the string against a different fret,
usually the one under the intended one. In both cases, filing the frets
might alleviate the problem if the saddle really should be that low.
Otherwise, simply raising the saddle a small amount on the side with the
problem should be fine.

## Filing frets

The frets go with the shape (or contour) of the neck radius (9, 12\",
16\", etc.) Frets can determine how the notes on your guitar sound (i.e.
intonation) and over time and use playing a fretted instrument the frets
will begin to wear out by either changing the shape of the crowns (the
top of the frets, and they are changed by being flattened out or
mis-shaped)or the frets will begin to leave their slots. Fret work
should be done by someone with experience doing this kind of job because
this is a job that can lead to worse problems on your guitar such as
your tonation being worse, action may be higher, strings may buzz out,
and it may require that multiple frets be replaced or further repaired.
Frets come in a variety of sizes as well making them each different to
work on and there are special tools available to do this line of work
but many are expensive and without proper training may not be used
correctly.

## Filing the nut

Filing the nut should only be done by a qualified repair person and is
used to reduce pressure at the nut to allow a heavier gauge of strings
to be used. It may not be necessary if the new strings are detuned lower
(e.g., when switching from .009\'s to .010\'s, the nut will need no
adjustment if the guitar is tuned to Eb-Ab-Db-Gb-Bb-Eb instead of
E-A-D-G-B-E).

## Neck/truss rod adjustment

This particular adjustment has been known to ruin guitars when performed
incorrectly, so here referral to a professional repair person is highly
recommended. A guitar will need a truss rod adjustment if the neck is
not straight. One way to check the straightness of the neck is to play
12th and 19th harmonics on the low and high strings. After sounding each
harmonic, fret the note there and play it again: it should be exactly
the same pitch. If it is not, the neck *may* be in need of adjustment.
However, this may be indicative of an intonation problem as well, which
*can* be fixed without the aid of a repair person; see below. If
adjusting the intonation does nothing for you, give the guitar to a
repair person.

## Adjusting intonation

You may notice each string on the bridge sits in a \"saddle\". Depending
on your setup, you might notice the saddles may be in different
positions: some might be pushed forward and others might be pushed back,
sometimes slightly. The positioning of the saddle effectively changes
the length of the vibrating string. Tune the guitar to concert pitch
with the aid of an electronic tuner, making sure the open strings are
*perfectly* in tune. Play the 9th and 12th fret harmonics, then play the
fretted notes. If the fretted notes are sharp, the string is too short
and the saddle needs to be pushed back toward the base of the bridge. If
the note is flat, the string is too long and the saddle needs to be
pushed up toward the nut. Repeat this procedure for each string.
Adjusting the intonation should be done every few months or at least
twice a year (Every six months interval).

