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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 258 reviews
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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.

5.0

Nifty files

By

Verified Buyer


Excellent

4.0

Glad to have these bass nut files

By

Verified Buyer


Files work great to get close but still require work after files to get clean sound. Bottom of guaged files are not totally round so using the actual bass string as a file with a cork for pressure over the nut was unavoidable to fine tune the slot. Still way better and faster results with these files.

5.0

great for my needs

By

Verified Buyer


every product I've purchased is great

5.0

Must Have!

By

Verified Buyer


These are a must for every shop. With every nut replacement, setup, level and crown, or refret the nut always needs some attention. These allow you to do it properly. I have them all in my shop and am replacing this one because it only lasted fourteen years??!! Five stars all the way.

5.0

Good product.

By

Verified Buyer


The nut slot for the A string on our newly built custom guitar was too shallow. This file fixed it immediately.

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