Three-in-one Fret File

  • 53 Reviews
  • Write a review

This wooden-handled file features three interchangeable 1-7/8" hollow burrs for recrowning a wide range of fret widths, from basses and guitars to mandolins.

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Three-in-one Fret File File handle with 3 burrs

File handle with 3 burrs

Item # 0685
In stock, ready to ship!


Three-in-one Fret File Narrow replacement burr only

Narrow replacement burr only

Item # 0679-N
In stock, ready to ship!


Three-in-one Fret File Medium replacement burr only

Medium replacement burr only

Item # 0679-M
In stock, ready to ship!


Three-in-one Fret File Wide replacement burr only

Wide replacement burr only

Item # 0679-W
In stock, ready to ship!


Total: $0.00
Quantity: 20


This wooden-handled file features three interchangeable 1-7/8" hollow burrs for recrowning a wide range of fret widths, from basses and guitars to mandolins.

The 4-1/2" long steel shank is angled for efficiency and clearance over the guitar body. Useful for a wide range of fret widths, from basses and guitars to mandolins.

#0685 Includes 1 wooden-handled file and 3 burrs in these sizes:
- Narrow, 3/32"
- Medium, 1/8"
- Wide, 3/16"

Replacement burrs sold separately.

Works on stainless frets, too!
All of our tools are suitable for use on stainless-steel fretwire, with the exception of our Fret Tang Nippers and Fret Cutters. Modern stainless-steel fretwire is known to be harder than the traditional nickel-silver blends, but our own shop experience indicates the wire does not cause premature wear of files or sandpapers.

Trade Secrets! Newsletter

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Erick Coleman answers an important tech-support question: What's the best fret-crowning file?

Ratings & Reviews

Three-in-one Fret File

  • Based on 53 Reviews
Displaying 4 of 6 1 2 3 4 5 6
Write a review

Excellent file

By Geary--GR Guitars from Flagstaff, AZ  USA
(Customer's Reviews) Sunday, March 04, 2012

I just finished fretting a new fingerboard and used the Three-in-one Fret File for the first time. After leveling, I used the new Fret File to re-crown the frets and it worked perfectly, especially over the body where I usually couldn't get enough angle on the fret ends. Great Tool!!!!


By Stormeon from Frazee, Minnesota
(Customer's Reviews) Tuesday, February 07, 2012

I love this little file. I use it often in my business of repairing guitars as well as when I build them! I like the interchangeable burrs. It makes it quick and easy to switch sizes between bass guitars and Elec/Acoustic guitars. If your looking for an inexpensive crowning file that does the job right then this file is a must!!

Another awesome tool from Stew-Mac!!

By Donnie Smith II from Fenwick, WV
(Customer's Reviews) Monday, October 17, 2011

You've hit it out of the ball park once more on this one!! Does all I need it too and all in one tool. Great $$ saver for a small shop like mine.

Don't buy  this tool, waste of money...

By Nissan Hayun from Israel
(Customer's Reviews) Wednesday, September 28, 2011

I've bought a lot of items from SM but this is the worst. The burrs dull quickly. It's not going smooth and leaves teeth marks. It ruin my frets and I had to refret. I've threw it away. Buy the diamond or the double edged file.

Excellent Versatile Tool

By Alex Wann from Benalla, Victoria, Australia
(Customer's Reviews) Monday, September 26, 2011

An inexpensive comfortable tool to hold.Can be used light or heavy to reem and crown frets. I also use small strips of sand paper placed under the burr to further shape and polish the frets.( Works as good as a fret polishing stick!)My Strat Smiles and sings like a bird.


By Nissan Hayun from Israel
(Customer's Reviews) Saturday, September 24, 2011

Not lasting. Bad quality. Had to refret my guitar! I've threw away mine to the trash!


By alain delaunay from th+¬nac france
(Customer's Reviews) Friday, September 09, 2011

is fast all good but its perfectible on the fixation system

a bit of rust, but a great tool.

By Juan Perales from Canada
(Customer's Reviews) Sunday, August 28, 2011

My first impression, I must admit, was not positive. When the file arrived it had a thin coating of rust on the shaft. I was surprised to receive it in that condition from S-Mc.

The rust was very superficial and came off easily with 600 grit sandpaper and WD40. With that said, the file worked perfectly and I am very satisfied. I would highly recommend it to anyone wanting to buy just one tool for filing frets. I would have given 5 stars but for the rust.

Really, really bad

By Midnight Lord from Ottawa
(Customer's Reviews) Wednesday, August 24, 2011

To be honest, I don't see how this file got so many good reviews. It is so rough and leaves teeth marks that I gave up on crowning and went with my old one which was not purchased from StewMac but was getting pretty blunt. I have experience with these things so my lack of knowledge is out of the question.


By Max Boderskov from +àrhus, Denmark
(Customer's Reviews) Tuesday, August 09, 2011

Now fretting is easy!

Displaying 4 of 6
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Shown on page 12 of our latest catalog.