You love the soft, warm voice of a classical guitar but already own a steel-string dreadnought. So you start wondering if nylon strings could give you that gentler sound.
They can, with a couple of important caveats. The strings on your acoustic likely anchor with bridge pins, and standard nylon strings aren’t built for that.
There’s also the neck to think about. Less string tension means the truss rod and nut may need attention before things sit right.
This guide walks through the swap and where it gets finicky. Let’s start with whether those mellow strings even belong on your steel-string acoustic.
Can Nylon Strings Be Used on Steel String Guitars?
Yes, you can use nylon strings on a steel string acoustic, but it’ll sound very different. I wouldn’t recommend trying the other way around and using steel strings on a classical guitar, because steel strings have a ball end that isn’t very compatible with a classical guitar bridge.
The two string types also have very different tension and action.
The type of guitar setup you’ve affects your ability to switch out steel strings for nylon. Traditional nylon or classical strings naturally don’t have ball ends.
Instead, they’re wrapped around and tied off across the base of the bridge - tied onto the bridge rather than held by bridge pins. If your guitar uses that tie-on setup, you have a built-in way to stop the strings from slipping.
The good news is that ball-end nylon and classical strings do exist. Ball-end nylon guitar strings are popular with folk guitarists, and they’re also handy for anyone who simply wants the mellow, smooth sound of nylon on a steel string guitar.
Things to Know About Nylon Strings First
Before jumping into the how-to, here are a few things worth knowing about nylon strings.
Nylon Strings Last Longer
Nylon strings take some time to warm up and stretch, but once you’re past that, they tend to last a long while. Depending on how much you play, a set can last a full year or even more.
Because nylon strings are essentially plastic, they’re stretchier and more durable, and unlike the strings on a steel string guitar, they won’t rust.
Nylon Strings Are Great for Fingerstyle
If you want to play songs that call for fingerpicking, nylon strings are a great fit. Since classical nylon strings are made of plastic, they’re much easier on the fingertips and softer to play.
Nylon strings are usually paired with the wider necks found on classical guitars, which gives you room to play various styles and chord shapes without your fingers bumping into each other.
Nylon Strings Are Beginner-Friendly
For people just starting out, a guitar with nylon strings is often recommended. Steel strings have higher tension, which can be uncomfortable on the fingers and lead to soreness early on.
That’s normal for beginners. Nylon strings are softer and easier to press, which makes them friendlier for practicing chords - especially barre chords, where holding down all the strings with one finger is far easier than fighting high-tension steel.
How to Put Nylon Strings on a Steel String Guitar
If you want to try nylon strings on your steel string guitar, here are the steps and the issues you need to work through to do it right.
-
Secure the strings at the bridge. Most common steel string acoustic guitars use a bridge-pin system. Standard nylon strings don’t have ball ends and are designed for pull-through bridges, so if you’ve bought ball-end nylon classical strings, find a way to seat them securely under the pins.
-
Feed the strings up through the nut. Nylon strings often have a bigger gauge than your guitar’s original steel strings. To make sure each string sits properly in its slot, you may need to modify the nut slots.
A specialized set of nut files works for this, with prices typically starting around $50.
-
Fit the strings into the tuning machines. In most cases the nylon strings fit the tuning machines fine. Just like the original steel strings, tune them up to the pitch you’d normally use.
-
Loosen the truss rod. Use an Allen wrench to loosen the truss rod significantly, or even all the way. The truss rod counteracts the high tension of steel strings.
With lower-tension nylon strings, that adjustment is no longer needed, and leaving it tight can bow the neck into a shape that makes the guitar unplayable. Loosen it before you play.
For more on string choices, see our guides on the best guitar strings for heavy metal and the differences between a classical vs acoustic guitar.
The Difference Between Steel and Nylon Strings
Before deciding which string to use, think about the genre you want to play. Nylon strings, like those on classical guitars, produce a mellow, softer, warmer sound.
That tone suits folk, classical, and plucked flamenco music. Steel strings, by contrast, produce a harder, brighter, more cutting sound that fits bluegrass, country, rock, and similar styles.
Whichever you choose, both can produce great-sounding music. The key is matching the string to the sound you’re after and to the guitar you’ve.
Frequently Asked Questions
Will nylon strings damage a steel string guitar?
Nylon strings put less tension on the neck than steel strings, so they won’t over-stress the guitar. The risk runs the other way: with much lower tension, the neck can back-bow unless you loosen the truss rod.
Make that adjustment and your guitar will be fine.
Do I need ball-end nylon strings?
If your steel string guitar uses bridge pins, ball-end nylon strings are the easiest option because the ball seats under the pin just like a steel string. Standard tie-on nylon strings have no ball end and are meant for classical-style bridges, so they’re harder to anchor on a pin bridge.
Why not just buy a classical guitar instead?
If you mainly want that warm nylon tone and a wider, more forgiving neck, a dedicated classical guitar will deliver it without any modifications. Putting nylon on a steel string guitar is a workaround that involves a few compromises, so it makes the most sense when you want to experiment with an instrument you already own.
Can I put steel strings on a classical guitar?
No. Steel strings exert far more tension than a classical guitar’s neck and bridge are built to handle, and the ball ends aren’t compatible with a tie-on classical bridge.
Doing this can warp the neck or pull the bridge loose, so keep nylon strings on a classical guitar.
Final Thoughts
Whenever you restring a guitar, choose strings that suit the type of guitar and setup you’ve. The wrong strings can put too much or too little pressure on the neck and even damage it over time.
If you want to put nylon strings on a steel string guitar, the smoothest path is ball-end nylon or classical strings that fit a pin bridge, plus loosening the truss rod to match the lower tension. Take your time, work through the steps above, and you’ll get a softer, mellower voice out of an instrument that was built for steel.
