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Gauged Nut Slotting Files

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Gauged Nut Slotting Files

About This Item

Our tempered edge-cut nut files produce round-bottom slots for nuts and saddles. Ensure your strings seat properly in the nut without buzzing!

Each chrome-alloy steel file has twin 4" cutting edges. Among our most popular tools, these professional files help you get the job done quickly and correctly.

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.

Tip: Slotting Tune-o-matic style saddles
Nut slotting files work great for metal saddles. Choose your file size as you would when slotting a nut: use the same gauge as the string, or a few thousandths larger. After filing to the desired depth, we suggest polishing the slot with Mitchell's Abrasive Cord to remove file marks and burrs.


Video

Trade Secrets!

Trade Secrets!

Are you supposed to slot Tune-o-matic bridge saddles?

Customers often ask how and why they should put slots in the saddles of their new Tune-o-matic bridge. Erick Coleman provides the answers in this issue of Trade Secrets.

Instructions

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.

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5.0
  • 4.78 average rating from 203 reviews
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5.0

Gets the job done right!

By
(Customer's Reviews)


How did I ever live without these?

5.0

Nut & Saddle files

By
(Customer's Reviews)


Easy work with these files...

4.0

Nice cuts

By
(Customer's Reviews)


I ordered a set of these, which they don't seem to offer anymore. It's a good set, though I did snap one off on the very first use. It is still useable, though. With the thinner ones, you have to be very careful not to focus all your cutting force on a small area of the file. Use the whole length. That's what I've learned. Anyway, a nice set to have. They cut quickly and make nice round bottoms. Widening the Slot can be a bit tricky.

5.0

Nut files

By
(Customer's Reviews)


They cut a perfectly shaped string slot every time!
Much more accurate and repeatable than the small diamond files I was using before.

5.0

Great Product

By
(Customer's Reviews)


If you are thinking about making your own nut or modifying a "finished" nut, don't even bother using anything else. Ruined several trying a variety standard wood working tools. Ordered the gauged nut slotting files and got it perfect the first time!

5.0

Excellent Files..

By
(Customer's Reviews)


Works perfect and cut very well.. Not to aggressive that they cut to fast.. Followed the tips from here about using feeler gauges as depth stop it worked perfect...

4.0

nut &Saddle Files

By
(Customer's Reviews)


very nice files look well made the only thing is I wish there were more string diameters to choose from

4.0

The Best files you can get.

By
(Customer's Reviews)


I got this new set of files. While the teeth of these files seems a little rough at first, I believe they will break in nicely and hopefully last as long as my old set.

5.0

Great tools

By
(Customer's Reviews)


Great tools; do exactly what they are designed for. Tried using rotary tools in the past for this job. Don't even try. These files do the job perfectly, with much more control and precision.

5.0

Great tool

By
(Customer's Reviews)


Stew Mac has the best tools to keep your guitar in top notch shape.

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StewMac PDF Catalog, page 4 See Gauged Nut Slotting Files
on page 4 of our StewMac Catalog PDF

12MB File

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