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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 than a few thousandths 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.

Save 10% by purchasing the complete set
Always have the right gauge for cutting and shaping string slots on any instrument. Complete set of nineteen files includes every size we offer.

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
  • 4.77 average rating from 253 reviews
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5.0

Worth the cost

By

Verified Buyer


I've used these files to adjust the slots of a thirteen course baroque lute.

5.0

the right tools save time and effort

By

Verified Buyer


These are not cheap when you buy all the sizes.I have been improvising for years. After grinding coping saw blades thinner, notching Xacto knife blades, dressing nasty slots with dental floss and valve grinding compound, I wish I sent the money years ago. These allow precise work in almost no time and leave the slot bottoms round enough to not need to be further polished for smooth action. I have worked too long and too hard in the past to accomplish what these do in minutes.

5.0

Quality products, Files.

By

Verified Buyer


While High priced, Quality IS excellent. Inspected same with a 30 pwr microscope primarily observing the bottom edge profile. These were found to BE truly ROUND; NOT V-shaped, square cut, ragged nor elliptical! Strings should FIT in slots perfectly, NO binding nor Intonation problems.
Thank you.

3.0

Pricey-Good Quality

By

Verified Buyer


Have not actually used files yet. Quality looks good and delivery was fast. Files are rather pricey,
I have found that Stew-Mac always stands behind their products. Three stars only because I have not used yet.

5.0

Excellent

By

Verified Buyer


These files work perfectly. Thank you

5.0

The best system for me

By

Verified Buyer


In the past, I have used fewer files than needed, and made larger slots by slanting. The last nut that I made, I kept going a little deeper on the 5th string, but it wasn't wide enough for the string. By the time I realized that, the slot was too deep. NOW I have a file for each needed gauge and that won't happen again. They work great.

5.0

Slotting files a must have for general maintenance

By

Verified Buyer


The accuracy that these files bring to nut and bridge saddles work is perfect. A must have if your going to attempt this type of work. It would be nice if they were a little less expensive or in a set discounted price. But well worth the money regadless as they do save time in setting up a new bridge or nut or just replacing saddles.

5.0

Nut files 

By

Verified Buyer


The files make setting the nut slot depth easier and more accurate.

5.0

Love these files

By

Verified Buyer


I bought a .10 nut slotting file to add to my set. I recently switched to a .10 high-E string on my main acoustic guitar after using a heavier gauge for many years. I'm going to fill the slot on the existing nut and recut with this file.

I'm not a tech or luthier, but I previously used these files to setup a tall nut for converting an acoustic guitar to a lap slide guitar. A little masking tape to protect the fretboard and headstock combined with patience and a gentle touch is all you need to use these files. The excellent results make these files a great investment.

5.0

Wow! Fast, accurate, and precise.

By

Verified Buyer


I'm a novice builder with only about 10 builds under my belt, and I tried other files before. Yes, they worked but these files were precise and extremely fast. I filed to a gnat's rump hair the nuts on two of my guitar builds (from kits) and I was amazed at how quick and perfect they worked. I also had built a mandolin and had never really set it up properly as it was "okay". I sat in front of the tv and flat filed my neck ever so slightly, dressed the high frets and cleaned them up and, filed the nut on all 8 strings. My goodness, it was fast and slick and within two episodes of the show my wife makes me watch, I had a bullet proof mandolin with closer tolerances than on my Flatiron Mandolin.

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

11.5MB File

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