As an avid guitarist, I know how important it is to have your electric guitar properly set up for optimal playability. One of the most critical adjustments is string action – the height of the strings from the frets running along the neck of your guitar.

If the string action is too high, the strings become difficult to press down when fretting notes. Too low, and the strings will buzz and rattle against the frets.

In this guitar setup guide, I’ll teach you how to measure your guitar’s current string action using a simple ruler. 

I’ll also provide step-by-step instructions for adjusting the string action on both Fender and Gibson-style bridge types. Properly setting your string action at home with just a few tools will allow you to perfect the playability of your guitar to match your playing style and preferences. So let’s get started!

Why Adjusting String Action Matters

Improving the playability of my guitar by setting the optimal string action has greatly impacted my enjoyment of playing. 

Here are a few of the key benefits I’ve experienced from learning to properly adjust string action:

• Improves playability – When the strings are too high off the frets, pushing them down to fret notes and chords cleanly can feel like a struggle. I struggled with hand fatigue until I lowered the action. Now, my hands glide effortlessly up and down the neck.
• Eliminates fret buzz – If the strings are too close to the frets, unattractive fret buzzing can occur, especially when playing harder or closer to the middle of the neck. A slight raise in action cleared up fuzziness.
• Adjusts to your playing style – I have an aggressive picking style, which requires more room for the strings to vibrate without hitting frets. I set my action slightly higher than the recommendations for lighter strumming.

What You’ll Need

Having the right tools on hand before making any string action adjustments is essential.

While specialized guitar setup tools exist, only a few basics are required to measure and adjust your action at home.

• Ruler
• Capo (optional)
• Allen wrench set
• Screwdriver
• Tuner

Measuring String Action with a Ruler

Accurately gauging current string action requires a quality ruler with inch measurements marked in 64ths. 

Rest the ruler across your 12th fret and press firmly lengthwise to prevent gaps. 

Check the distance from the fret tops up to the underside of each string, aiming for consistency around 1/16″ on the treble side and 3/32″ on the bass side. This baseline helps determine any adjustments needed.

Adjusting Action on Fender-Style Bridges

Many Stratocasters and other Fender-style electric guitars have individual steel saddles for each string on the tremolo bridge. 

A small hex wrench loosens the set screws, allowing you to raise or lower saddle height for that corresponding string’s action. 

Go slowly in 1/4 turn increments, returning and measuring after each tweak. Keep in mind the fretboard’s tapering radius as you adjust.

Adjusting Action on Gibson-Style Bridges

On Gibson Les Pauls, SG’s, and semi-hollow electrics, action height relies on the two posts supporting a unified bridge piece. 

Use a screwdriver to turn the threaded posts clockwise to increase overall action or counter-clockwise to decrease. Be more gradual with 1/8 turns at once. 

Return fully between adjustments and use your ruler to compare string measurements.

Final Checks Before Playing

Properly setting string action can transform your electric guitar, optimizing playability to match your style. By methodically measuring, adjusting, retuning, and testing, you can dial in action that eliminates fret buzz while allowing comfortable fretting anywhere on the neck. While the process takes precision and patience, this guide breaks down adjustable bridge types, measurement methods, and iterative tweaks involved. You can set the ideal action height yourself with the right tools and know-how. So break out the hex wrenches and get tinkering!