Please see our COVID-19 Statement
StewMac Fretbar Understring Leveler

StewMac Fretbar Understring Leveler

StewMac Fretbar Understring Leveler 4.5" Length
New!

4.5" Length

Item # 4641
Due 5-7 days
Email when in stock

$19.95

StewMac Fretbar Understring Leveler 9" Length
New!

9" Length

Item # 4642
Due 5-7 days
Email when in stock

$29.95

StewMac Fretbar Understring Leveler 18" Length
New!

18" Length

Item # 4643
Due 5-7 days
Email when in stock

$54.95

Replacement String Jack
New!

Replacement String Jack

Item # M4768
In stock, ready to ship!

$0.99

+
StewMac Fretbar Understring Leveler, 4.5" Length with Stikit Set
New!

4.5" Length with Stikit Set

Item # 2344
Due 5-7 days
Email when in stock

$68.35

StewMac Fretbar Understring Leveler, 9" Length with Stikit Set
New!

9" Length with Stikit Set

Item # 2345
Due 5-7 days
Email when in stock

$78.35

StewMac Fretbar Understring Leveler, 18" Length with Stikit Set
New!

18" Length with Stikit Set

Item # 2346
Due 5-7 days
Email when in stock

$103.35

 
Total:
Qty:
Scroll to Top

StewMac Fretbar Understring Leveler

About This Item

How do you level the frets at the right tension?
One of the most challenging things to get right with any setup or fret work is knowing the frets will be level under actual string tension and playing conditions. Now we've made it easy.

Our solution for this was the invention of the Erlewine Neck Jig—the industry standard when it comes to simulating string tension to get the most accurate fretwork possible. But let's face it, sometimes jobs are too small to strap them into the Neck Jig, or you need to work outside your shop where the neck jig isn't practical. We knew there had to be a better answer.

Now, you can level your frets...with the strings ON!
Matt Brewster from 30th Street Guitars brought us this amazingly simple (but effective) idea for getting perfect fret dresses with the strings still on the guitar. This great idea became the StewMac Fretbar® Understring Leveler, or simply the Fretbar. This revolutionary new tool lets you level your frets under full tension without removing the strings. It's designed to work with our 1" wide 3M Stikit Gold Abrasives for ultra-fast set up and leveling.

Fret work without guesswork
With the Fretbar you'll level the frets with the exact tension the neck has when played. This is because the Fretbar fits UNDER and BETWEEN the strings, with the guitar tuned to pitch. The precision-ground surface is just 5/64" thick, allowing you to glide under the strings when leveling.

Because the neck is under tension, you'll clearly see every hump, twist, high or low spot. With the Fretbar you can level the frets without worry or any "surprises" that pop up after the job.

There is a Fretbar for every leveling job:

4.5" length ideal for spot leveling problematic frets all over the neck. It's also perfect for creating fallaway on acoustic guitars.

9" length is designed for smaller necks like ukuleles and mandolins. It also works for leveling full scale necks and spot leveling.

18" length makes it easy to level an entire neck. You'll quickly and evenly level most of the frets at the same time, without the added danger of running into the nut, saddle, or hardware.

We also include the String Jack to use with the Fretbar. Put the jack in front of the nut to raise the strings without changing the tension on the neck. Replacement String Jacks are also available.

Works with the strings off too
This is also a great all around fret leveling tool. Used with the strings on or off, the precision-ground surface works quickly and accurately to get frets level. If you're just getting started or have a ton of experience, the Fretbar is a great option for any fret work.

    Built for a lifetime of use
  • Made of durable extruded 6061 aluminum
  • Guaranteed accuracy of ±0.0015" per foot
  • Designed to work with our custom 1" wide 3M Stikit Gold Abrasives
  • Works with the strings on or off

Your fastest and most profitable leveling ever
Because you don't need to remove or replace the strings, you'll save time on every leveling job. And with our 1" wide 3M Stikit Gold Abrasives—already cut to the perfect width—you're ready to level in an instant. No more wasted strings or sandpaper!

Save with the set: Fretbar and Stikit Set
Stikit Abrasives cut like a file, last longer than regular sandpaper, and are sized to stick right to the 1" width of each Fretbar. These are the same professional sandpapers we use to quickly and cleanly level frets, and to remove the scratches before you recrown and polish.

Each set includes one Fretbar and four 15-yard rolls of Stikit, one of each grit: 320, 400, 600 and 800-grits. More grits are available separately.

Each Fretbar is 3/4" (19mm) wide x 1-15/32" (37mm) tall extruded aluminum, and available in three lengths: 4.5" (114mm), 9" (228mm), and 18" (457mm).

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. 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.



CALIFORNIA PROPOSITION 65 WARNING
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.


Video

Customer Reviews

  • Excellent
  • Good
  • Average
  • Fair
  • Poor
Write a review
5.0
  • 4.96 average rating from 23 reviews
Sort by
5.0

Worked well for first timer

By

Verified Buyer


When assembling a partscaster bass with an Allparts neck, I had a low fret. I have always avoided fretwork out of fear for ending up with a poor result. But I decided to take a plunge this time.

I bought this along with a Z-file for the crowning and ended up with a great result.

It is very important to get the the neck as flat as possible before any filing.

5.0

good little tool

By

Verified Buyer


I used the small 4" I think I re-leveled the frets on my two tenor ukes I just built from scratch. This tool worked very well, The tool came with a small plastic quarter round peice that I have no idea what it is for??

Response from StewMac


Hi Scott,

Thanks for sharing your feedback with us, we truly appreciate that. We are glad to hear that you like the StewMac Fretbar Understring Leveler! That small plastic piece is called the String Jack and it can be used with the Fretbar. Put the jack in front of the nut to raise the strings without changing the tension on the neck.

5.0

Great but could be perfect

By

Verified Buyer


Very happy with these, though I thought I had invented them. I own the small and large varieties. The work great but my one wish is that they come up with somewhat wider, radiused versions. Not essential and these are great as is, but it would be nice to have a 9.5” and 12” radius version for the ideal level job.

5.0

The perfect tool for that "special" guitar!

By

Verified Buyer


Nothing like having the right tool at the right time.

5.0

Under string leveler

By

Verified Buyer


It found a multitude of raised frets on a hauser style classical I built and the £300 acoustic. Both actions are now manageable for an average player like myself. And no first fret buzz. Buy it.

5.0

awesome tool

By

Verified Buyer


I had a vintage bass with a problem neck and this tool made it possible to eliminate all fret buzz, which occurred in a few disparate locations on the fb. If it didn't work the next step would have been removing the original frets, planing the fb flat and re-fretting etc - a much more expensive fix.

4.0

Does the job

By

Verified Buyer


I bought the 4.5" version. Leveled a few high frets on a well worn Strat that's overdue for a refret but will have to wait a while for that. Quick and efficient compared to setting it up on the neck jig for a small job like this. I wish I'd had this tool years ago when I was doing a lot of partial refrets; would have been a big time saver.

5.0

Must Have Tool

By

Verified Buyer


As one of the guitar techs in the busiest guitar store in San Antonio we see many guitars with fret issues as well as lifted or compressed tongues. This tool can turn a 1 or 2 hour job into 1/2 hour. It paid for itself on the first repair. Repair with the neck under tension is a real game changer. The sturdy construction will surely last a lifetime.

5.0

Amazing tool

By

Verified Buyer


When I tell you this is the best tool I’ve ever bought! I bought the 4.5” for spot leveling. I couldn’t get rid of buzzing in two particular spots on my fretboard, this solved my problem in 5 minutes. Best tool ever because you can level under string tension. Buy one now

5.0

Good idea

By


I've always used my "I" section spirit level for exactly this job. And when its done its job I still have a spirit level.

Showing 10 of 23 Read more reviews >>