Fret Rocker

  • 105 Reviews
  • Write a review

Pinpoint those pesky high frets, and check the final height after you've redressed or replaced them, reach for the Fret Rocker!

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Fret Rocker

Item # 3770
In stock, ready to ship!


Total: $0.00
Quantity: 20



Dan Erlewine troubleshoots fret problems with the tiny straightedges that became the Fret Rocker.

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Pinpoint those pesky high frets, and check the final height after you've redressed or replaced them, reach for the Fret Rocker!

Our 4-in-1 mini straightedge spans three frets and "rocks" to indicate uneven fret heights. Precision-machined for accuracy to .0015" per foot, the 4", 3", 2" and 1-5/16" edges make it versatile for any fretted instrument, from basses to guitars to mandolins.

The Fret Rocker is made of 1/8" nickel-plated steel with a satin finish, for durability in professional use. It's an indispensable diagnostic tool, before and after partial refretting and recrowning jobs. It lets you do more accurate fret work for better playability.

Essential for fretting
This item is one of seven tools included in our Essential Fretting Tool Kit, a compilation of tools you'll need for the fundamentals of fret work. Kit also includes our book, Fretwork Step By Step by Erick Coleman with Dan Erlewine.

Ratings & Reviews

Fret Rocker

  • Based on 105 Reviews
Displaying 1 of 11 1 2 3 4 5 6 7 8 9 10 11
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By \N from \N
(Customer's Reviews) Wednesday, June 18, 2014

Like another review I thought this might be overkill but the 3 sides make a huge difference on my basses. It was so fast finding those slightly high frets and so fast checking progress as they are filed. Worth every penny!

Fret Rocker is Rock'n Me!

By Bob Rainey from Fernandina Beach, FL
(Customer's Reviews) Saturday, June 07, 2014

I wasn't quite sure why the price was a little high for a straight edge until it arrived and I tried it out. Then I realized the time and maybe even money spent on a fret re-leveling job. As you start at the 1st fret you will need the longer straight edge section, then you gradually shift to the smaller then finally to the smallest for the highest frets. You're always able to contact 3 frets at a time, which you must have to check for one that is higher (or lower) than the adjacent ones. Now I wouldn't DARE take a long file or sanding block and file down all of the frets to get them the same height, even when you've set your relief at zero. With that approach, you MUST have your fretboard absolutely flat, and some fretboard-truss bars won't adjust the fretboard to that perfect starting point. Taylor guitars have that NT neck which allows a perfectly flat board (if you desire it), but most all the others it's a compromise since most of them have a non-movable neck past the join at the top bout. The fine adjustments for a conservative approach to correcting one or two higher frets requires just such a tool as the Fret Rocker. It's quite thick, so it's not going to bend while you're using it. Exactly what I'd expect from Dan and the S-M crew. Excellent! And don't forget to pick up one of S-M's leveler that fits right onto the fretboard while you keep the strings on. That's the other cousin to this rocker. Buy 'em both.

Precise Fret Checking

By Erik H. from USA
(Customer's Reviews) Wednesday, June 04, 2014

All sides work well for checking different fret heights and making sure frets are leveled. Make sure to check middle and both sides of frets though. But using the rocker is very accurate.

A must have for fretwork

By Bassmage4 from NYC
(Customer's Reviews) Wednesday, April 16, 2014

A simple, precise and durable piece of equipment. It's a welcome addition to any tool kit.

It Rocks

By Paul Richard from Oshawa,Canada
(Customer's Reviews) Friday, February 28, 2014

Another great innovation that leaves no doubt about wether or no you have a high fret. It finds them in a hurry and that saves you a lot of time. :)

A moneymaker

By Tai Fu from Taiwan
(Customer's Reviews) Sunday, February 16, 2014

I find the tool very indispensable for determining if my fret dress jobs are complete, or if frets need dressing in the first place. On that end I was able to convince several customers to let me level the frets on their guitars after I show them that the frets on their Gibsons aren't level in the first place.

A Must Have!

By BMW FREQ from Layton, UT USA
(Customer's Reviews) Tuesday, February 11, 2014

I thought using a straight edge was sufficient enough when it came to checking high and low frets; boy was I wrong. I couldn't believe just how unlevel my frets were until I used this handy little gadget. Worth every penny and a must when checking and leveling your own frets...BUY ONE!!!


By MartinT from Central Coast, NSW
(Customer's Reviews) Friday, January 17, 2014

So, every guitar I build uses this tool. That's when you know it is an essential part of your workshop! Love it, don't know what I'd do without it.

Fret Rocker

By Martin from Rosario, Santa Fe, Argentina
(Customer's Reviews) Thursday, January 09, 2014

an essential tool for daily work

A Must Have Tool

By zapkat from Sierra Vista, AZ
(Customer's Reviews) Sunday, November 24, 2013

There isn't a lot to say that has not ben said. Fret Rocker is the only way to check the frets. Unless you can Plek the neck.

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