Double-edge Nut Files

  • 69 Reviews
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The most durable and efficient nut-slotting files available. Specially designed for nut slotting, each file cuts two different width slots.

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Double-edge Nut Files 0.012" / 0.020"

0.012" / 0.020"

Item # 4541
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Double-edge Nut Files 0.026" / 0.032"

0.026" / 0.032"

Item # 4542
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Double-edge Nut Files 0.036" / 0.042"

0.036" / 0.042"

Item # 4543
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Double-edge Nut Files 0.050" / 0.060"

0.050" / 0.060"

Item # 4544
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Double-edge Nut Files 0.075" / 0.090"

0.075" / 0.090"

Item # 4545
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Double-edge Nut Files 0.105" / 0.120"

0.105" / 0.120"

Item # 4546
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Details

The most durable and efficient nut-slotting files available. Specially designed for nut slotting, each file cuts two different width slots.

Each 9/16" x 7-5/8" (14.29mm x 193.67mm) steel file cuts on the edges only, and tapers from the center to a different thickness on each cutting edge. The set of six files does the work of twelve!

Rubber-coated handles give firm, comfortable control for the job. The complete set includes edge widths for filing round-bottom nut slots on most stringed instruments, including basses. Each file's cutting edge is approximately 3-7/8" (98.43mm) long.

What files do I need?
Choose nut slotting files that are the same size or no more that a few thousands larger than your individual string gauges. A smaller file can also be rocked side-to-side to widen a slot to the desired size. For example, you can cut a .043" slot with a .042" file by moving it around a bit.

The most popular Double-edge Nut Files are included in the Essential Nut Making Tool Kit, which has all the basic tools you'll need for shaping, string-spacing, slotting and fitting string nuts like a pro.

Tip: Customize your files
We recommend that you mark on each side of your files so while working you can quickly tell the different gauge of cut.

Here's how: make a cut on a scrap piece of bone or wood with both sides of the nut file, then measure the width of each cut with feeler gauges to determine which side is which. Guitar strings of known gauges will also work as measuring tools in a pinch.

Once you have determined the proper edge, mark the file accordingly with a permanent marker.


Product Instructions

Making a Nut, Step-by-Step

Dan Erlewine, of Stewart-MacDonald's R&D Team, walks you through making and installing a new nut.

Ratings & Reviews

Double-edge Nut Files

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  • Based on 69 Reviews
Displaying 4 of 7 1 2 3 4 5 6 7
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Double-edge Nut Files

By Ken S. from Canada
(Customer's Reviews) Wednesday, March 21, 2012


Work excellent, even on man-made products.

Nut Files

By Schwagdog from Pennsylvania
(Customer's Reviews) Sunday, March 18, 2012


These do a fantasic job. They are solid, easy to handle, and effortless to cut through bone, plastic, or graphite. Definitley a good investment. Only problem is that I would like to see them make a mark on which side is which... very small files should have that indicator. Latest build... a '51 nocaster. Oh you see the string tree and say WHAT? ? ? It's been replaced with the original button style. And decaled also! 7 degree radius.

excellent...but needs different way to store

By Triskel Workshop from Antwerp, Belgium
(Customer's Reviews) Sunday, January 22, 2012


The files are excellent tools.
one remark: they are delicate tools, so best to store them in a sturdy box.
The plastic protection sleeves that are included are a pain to use. They stick to the tool when inserting or taking out the file

Double-Edged Nut Files

By Pat Green from UK
(Customer's Reviews) Friday, December 23, 2011


These work well and are a big improvement on trying to do the job with needle files. They produce a V shaped slot with a rounded seating for the strings. I also have the single edged files which have a better profile, I think, giving vertical sides and round seating. However the double edged are easier to use but I agree with the other reviews the marking on the handle needs to be clearer and it is easy to use the wrong file. I found matching the gauge file with the string gauge for both types of file gave a tight fit and a bit of rocking is in order to loosen a bit.

Double-edge nut files

By Andybanjo from UK
(Customer's Reviews) Friday, November 18, 2011


Good reliable tools that we use day-in, day out for making new top nuts & sorting out the slots in existing top nuts. Can't fault them and they last 3 - 4 years even with very intensive professional workshop use.

Nice & precise tool to get the job done

By Billy C from Pennsylvania
(Customer's Reviews) Wednesday, November 09, 2011


These are very valuable tools for filing nut slots,They work way better than a conventional file and you will not be disappointed.Now all I need is a few more tools and I can setup a guitar on my own.Thanks Stewart Macdonald

worked great

By Set-up Technician from Solon,Ohio
(Customer's Reviews) Sunday, November 06, 2011


File was easy to handle. Very predictable.

Nut Files

By ThomasHouck from Oakton, Virginia, USA
(Customer's Reviews) Thursday, October 13, 2011


If sustain seems to be a problem having the correct file in hand can often cure the problem. Save by buying the set opposed to buying them separately. Low sustain can happen to any string. These files are actually two files in one as each edge is of a differnet gauge. Don't let low sustain drive you NUTS!

easy job with this!!

By terry chapman from UK
(Customer's Reviews) Monday, October 10, 2011


This along with all the other nut files from Stewmac have been nothing less than spot-on.Ive had my others for 10+ yrs now and still cut perfectly!!
If I had a gripe it would be better to clearly label what side is what??
Recommended.

Double sided nut file

By JB Lenoir from Australia
(Customer's Reviews) Thursday, September 15, 2011


There is no doubt that the right tool makes the job easy. StewMac nut files are great,I'll be back for more. The workshop tips are fabulous! Keep them coming.

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