Restringing a classical guitar takes about 30 minutes once you know the process

Classical guitar strings are tied on at the bridge and wound around tuning pegs at the headstock, which means restringing is different from electric or steel-string acoustic guitars. You will need new nylon strings (a full set of six), wire cutters, a string winder (optional but helpful), and a tuner. The process involves removing old strings, cleaning the fretboard, tying new strings to the bridge, winding them around the tuning pegs, and tuning to pitch.

Most players restring every three to six months, depending on how often they play. The strings themselves cost $15 to $40 for a decent set, and the process becomes faster each time you do it. Once you understand the bridge knot and the winding pattern, you can restring without looking up instructions again.

Key Takeaways

  • Classical strings are tied to the bridge with a knot, not inserted through a bridge pin like steel-string guitars, so the tying method matters for tuning stability.
  • Remove all six strings at once so you can clean the fretboard and bridge, which is difficult to reach when strings are on.
  • Wind each string around its tuning peg in a downward spiral so the string wraps neatly and does not slip during tuning.
  • New nylon strings take several hours to settle and will go flat repeatedly during the first day, so tune them up several times before playing.
  • Keep a spare set of strings in your case because a single broken string means you cannot play until you replace it.

What you need before you start

Gather these items on a flat surface before you remove any strings. You will need a new set of classical guitar strings (six nylon strings, usually sold as a complete set), wire cutters or string clippers, a tuner (digital tuners cost $10 to $30 and work faster than tuning by ear), and a clean cloth. A string winder is optional but saves your hand from fatigue when winding the thicker bass strings.

Classical strings come in three gauges: light, medium, and heavy. Light strings are easier on your fingers and go out of tune faster. Heavy strings hold tuning longer but require more finger strength. Medium gauge is the standard choice for most players. Buy strings from a music store or online retailer that specializes in classical guitars—big-box retailers often stock only steel-string sets, which will not work.

Remove the old strings and clean the fretboard

Loosen all six tuning pegs at the headstock by turning them counterclockwise until the strings are slack enough to unwind by hand. Unwind each string completely and pull it out of the tuning peg hole. Then remove the strings from the bridge by untying the knots at the bridge end. Classical strings are tied on with a specific knot, so do not worry about saving the old strings—you will tie new ones the same way.

Once all strings are off, use a soft cloth to wipe down the fretboard, the top of the guitar, and the bridge. This is the only time you can easily reach these areas without strings in the way. Do not use water or harsh cleaners; a dry cloth or one slightly dampened with linseed oil is sufficient. Wipe the tuning pegs and the headstock as well.

Tie the new strings to the bridge

Classical bridge knots hold the string in place through friction and tension, not through a mechanical pin. Start with the thickest string (the low E string, usually marked with a red or colored dot on the set). Insert the string through the hole in the bridge from the top, leaving about 4 inches of slack on the short end. Bend the short end back over the bridge and wrap it around the long end of the string twice, then pull the long end tight. The short end should be trapped under the wraps and point downward along the bridge.

Repeat this knot for all three bass strings (the three thickest strings). The treble strings (the three thinnest strings) use the same knot but with only one wrap instead of two, because thinner strings hold the knot more easily. Pull each knot tight so the string sits firmly in the bridge groove. Trim any excess string hanging below the bridge with wire cutters, leaving about a quarter-inch of tail.

Wind the strings around the tuning pegs

Start with the thickest string. Pull it up to the headstock and insert it through the hole in the tuning peg for the low E string (the peg closest to the bridge on the headstock). Leave about 2 inches of slack, then begin turning the tuning peg counterclockwise. The string should wrap downward around the peg post in a spiral, with each wrap sitting below the previous one. This downward spiral keeps the string from overlapping itself and ensures even tension.

Wind until the string is tight enough to hold pitch, then check with your tuner. Do not tune to full pitch yet—bring it up to about 80 percent of the target note. New strings will stretch and go flat, so tuning all the way up now wastes time. Repeat this process for all six strings, working from the thickest to the thinnest. If you are using a string winder, insert the handle into the tuning peg and turn the crank instead of turning the peg by hand. This is much faster and easier on your hands, especially for the thick bass strings.

Tune and stretch the new strings

Once all strings are wound and at about 80 percent pitch, use your tuner to bring each string up to its target note. The standard tuning for classical guitar is E-A-D-G-B-E, from the thickest string to the thinnest. Tune the low E string first, then A, D, G, B, and high E. Check the tuning twice to make sure all strings are accurate.

New nylon strings stretch as they settle, which causes them to go flat. Gently pull each string away from the fretboard at the middle of the neck, then retune. Repeat this stretching and retuning process several times. You may need to retune every few minutes for the first hour, and again the next day. This is normal and does not mean something is wrong with your strings or guitar. After 24 hours, the strings will hold tuning much more reliably.

Trim the excess string length at the headstock

Once the strings are tuned and have settled somewhat, trim the excess string hanging from each tuning peg. Leave about a quarter-inch of tail so the string does not slip out of the peg hole, but cut away anything longer. Long tails look messy and can vibrate against the headstock, creating unwanted noise.

Use wire cutters or string clippers to make a clean cut. Be careful not to cut so close that the string unwinds—a quarter-inch is a safe margin. If you accidentally cut too short and the string slips, you will need to unwind the peg, reinsert the string, and wind it again.

Frequently Asked Questions

How tight should I wind the strings around the tuning pegs?

Wind until the string is snug in the peg hole and does not slip when you gently tug it. The string should wrap in a neat downward spiral with no overlaps. You will develop a feel for the right tension after a few restrings. If a string slips during tuning, unwind slightly and retighten the peg.

What if I break a string while restringing?

Nylon strings are fragile and can snap if you pull too hard or wind too quickly. If a string breaks, remove it and replace it with a new one from your spare set. You cannot play with a missing string, so keeping a backup set in your case is important.

Can I restring one string at a time instead of all six?

Yes, you can replace individual strings as they break or wear out. However, restringing all six at once lets you clean the fretboard and bridge, which is much harder to do with strings on. Most players restring the full set every few months anyway.

How long does it take for new strings to stop going flat?

New nylon strings typically settle within 24 hours, though they may drift slightly for a few days. Stretch them gently and retune several times during the first hour, then check tuning again the next morning. After that, they should hold pitch much more consistently.

Do I need a string winder, or can I wind by hand?

A string winder is optional but saves time and effort, especially for the thick bass strings. Winding by hand works fine and costs nothing if you already own a winder. Either method produces the same result as long as you wind in a downward spiral and keep the wraps neat.