How to Fix Fret Buzz from a High Fret

FRTLZR Tutorials · Fret Work
How to Fix Fret Buzz from a High Fret with the FretShaper

One high fret can cause buzz or a dead spot at a single position — and it doesn't need a full fret job to fix. The FRTLZR FretShaper lets you spot-level and polish that one fret quickly, at home.

Level: Intermediate Time: ~15–30 min You'll need: FRTLZR FretShaper

Is a high fret really your problem?

If a note buzzes or chokes out at one specific fret while the rest of the neck plays clean, a single high fret is the usual cause. Fret the string one position above the buzzing note: if the buzz disappears, the fret just ahead is sitting too high. The FretShaper levels that one fret back down — no need to level the whole board. It's ideal on the go: backstage, at a gig, or at your bench.

Not sure it's a single fret? Widespread buzz across many positions usually means neck relief or action, not one high fret — adjust the truss rod and action first. Uneven wear across the whole neck is a full leveling job (see the Damon FatBeam & Crowning File).
What you'll need
  • FRTLZR® FretShaper
  • 10 sheets of 320 grit sanding paper (included)
  • Masking tape to protect the fretboard around the fret
  • Optional: FRTLZR Fret Polishing Kit for a final shine
First, rule out an unseated fret: a "high" fret is very often just a fret that has lifted slightly out of its slot — it reads as high but needs seating, not leveling. Always check the fret is properly seated and tap it back down first (see step 2). Leveling an unseated fret removes metal for nothing and won't fix the buzz.
Then work carefully: spot-leveling removes a little metal and is permanent. Work in small increments, check the buzz often, and stop as soon as it's gone. The FretShaper's industrial-grade body is designed to sit over the fret without scratching its neighbours.

Step-by-step

  1. Find the high fret

    Identify exactly which fret buzzes or deadens. Mark it, and mask the fretboard on both sides so only that fret is exposed.

  2. Check it's seated — and tap it down if not

    Before removing any metal, make sure the fret isn't simply lifted. Press along it and tap gently: if it rocks, sits proud, or springs back, it isn't seated. Support the neck from underneath and tap it back down with light taps of a fretting hammer, then re-check the buzz. Only continue to leveling if the fret is fully seated and still too high — so you never file off metal you didn't need to.

    A fret that keeps lifting needs re-gluing (a drop of thin CA glue) or re-seating properly — not leveling. Fix the seating first.

  3. Fit the sanding paper

    Cut a piece of the included 320 grit paper to fit the notch of the FretShaper, and hold it in place in the notch.

  4. Place the FretShaper over the high fret

    Set the tool down so it sits squarely over the fret you're correcting. The body rides on the surrounding frets, keeping your leveling controlled and even.

  5. Glide side to side

    Move the FretShaper smoothly left and right along the fret. Light, even passes take the high spot down a touch at a time.

    Tip: check after just a few passes. Re-fret the note and test — as soon as the buzz is gone, you're done. Less is more.

  6. Polish the leveled fret

    Polish the section you leveled so it's smooth and shiny again — the FRTLZR Fret Polishing Kit is ideal here. If the fret top looks flattened, lightly round it back to a crown first for the cleanest, most accurate note. Remove the tape, restring, and play.

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FAQ

Do I need to re-level the whole neck?

Not for a single high fret. The FretShaper is made for exactly this — spot correction of one fret without touching the rest.

Will it scratch the frets next to it?

The FretShaper's industrial-grade material is designed to protect adjacent frets while you level the target fret.

My fret ends are sharp and catching my hand — is this the right tool?

No — that's fret sprout, a beveling job. Use the FRTLZR FretKata beveling file for sharp fret ends. The FretShaper is for leveling a high fret.

The fret feels loose or lifted — do I still level it?

No. Seat it first — tap it back down (or re-glue a stubborn one), then re-check. Level only if it's still high once fully seated. Leveling an unseated fret wastes metal and won't cure the buzz.

The buzz is everywhere, not at one fret — what then?

That's usually neck relief or action. Set the truss rod and action first. Uneven frets across the whole neck are a full leveling & crowning job.