8" Radius Blocks

  • 122 Reviews
  • Write a review

Accurately true or change a fingerboard's radius and level frets.
We make these hardwood blocks for use with Stikit Abrasives, to radius a fretboard quickly, accurately and without guesswork.

Read more

7-1/4" radius

Item # 0415
In stock, ready to ship!

$16.20

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9-1/2" radius

Item # 0405
In stock, ready to ship!

$16.20

+

10" radius

Item # 0416
In stock, ready to ship!

$16.20

+

11" radius

Item # 0406
In stock, ready to ship!

$16.20

+

12" radius

Item # 0417
In stock, ready to ship!

$16.20

+

14" radius

Item # 0419
In stock, ready to ship!

$16.20

+

15" radius

Item # 0420
In stock, ready to ship!

$16.20

+

16" radius

Item # 0418
In stock, ready to ship!

$16.20

+

17" radius

Item # 0421
In stock, ready to ship!

$16.20

+

20" radius

Item # 0403
In stock, ready to ship!

$16.20

+
Currency:
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Quantity: 20

Details

Accurately true or change a fingerboard's radius and level frets.
We make these hardwood blocks for use with Stikit Abrasives, to radius a fretboard quickly, accurately and without guesswork.

Shaping fingerboards: use 80 through 220-grit
Leveling frets: use 220 through 400-grit

When working on compound radius fretboards, simply change blocks as you progress along the neck.

Dimensions: 8" (203.20mm) long x 2-3/4" (69.85mm) wide

See our shorter blocks for spot leveling, and for use as clamping cauls when gluing frets.

What's your radius?
Quickly find the curvature of a fingerboard or bridge with a set of radius gauges. Use them frequently to check your work as you smooth or shape a fingerboard or frets: a quick visual check keeps you from accidentally altering the shape—a mistake that's easy to make and hard to fix.

Radius Gauges


Product Instructions

Radius Block Basics

An explanation of the different uses of a radiused sanding block.

Ratings & Reviews

8" Radius Blocks

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  • Based on 122 Reviews
Displaying 5 of 13 1 2 3 4 5 6 7 8 9 10 11 12 13
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8" Radius-sanding blocks

By CharlieTahoe from Lake Tahoe, NV
(Customer's Reviews) Saturday, August 04, 2012


I Coated the fingerboard on my 2008 Fender fretless Jazz bass with slow drying epoxy. I tried to level the fingerboard with a regular flat block first. It worked, but it wasn't perfect by a long shot. I was ready to take my bass to my (excellent) luthier to finish the leveling job, when I read the reviews on the radius-ed blocks from StuMac. I'm really glad I decided to try it. I was able to do a much more professional leveling job with "the right tool". Now that I have a little experience with epoxy, and getting it leveled properly, I'll be able to do some of my other fretless basses, and also keep them re-coated, and/or touched up occasionally. I'm very pleased with the result. It seems like a lot of money for a piece of wood, but I promise you won't look back. I would definitely recommend these blocks to anyone pro, or amateur. The results are worth the price.

Another must have for your shop

By Rich S from Sussex County, New Jersey
(Customer's Reviews) Saturday, August 04, 2012


My first use was as a caul to set up a neck on the drill press to drill mounting holes. Looking forward to using it for fret leveling.

Tough work

By Washington from New York City
(Customer's Reviews) Friday, July 20, 2012


It's a strain on the arm but man this thing levels inlays perfectly! Great idea, well done.

Very satisfied!!

By Gary at SharpenYourAxxe from Oakton Virginia
(Customer's Reviews) Sunday, July 15, 2012


It works just like it should. After I level the frets with my leveler I lightly use these to get the frets uniform from end to end.

Radius Block

By GMCullan from Massachusetts
(Customer's Reviews) Thursday, June 28, 2012


Great for leveling finger boards and frets. I even used it as a template for pre-bending my fret wire. Nice!

what I need

By Scott McMillin from memphis, tn
(Customer's Reviews) Friday, June 15, 2012


Exactly what I needed to do that fret job

Worked for My First Guitar Build

By Matt Travers from MA
(Customer's Reviews) Thursday, June 07, 2012


I purchased this item for my first ever guitar build that I am still currently working on. Since I had a pre-cambered and slotted rosewood fretboard, I only used this to level and finish-sand it after gluing it to the neck. It matched the 12" radius of the fretboard and I was pleased with the result. My only concern is the long-term dimensional stability of this product given its wooden construction. I think it will still be good to level my frets, but then I may eventually invest in the aluminum beam for future projects.

Good   

By niponz from Thailand
(Customer's Reviews) Wednesday, June 06, 2012


This good

Great size

By Little Crow from Atlanta, GA
(Customer's Reviews) Friday, June 01, 2012


The 8" blocks are perfect for fret board and fret work, and coupled with adhesive-backed sandpaper make leveling and sanding easy and quick.

Nice fit Makes the job easier

By ADDIE from Calif
(Customer's Reviews) Thursday, May 31, 2012


I like this especially for the severe radius' like 71/4 I just used a very light sand paper.. does the job.. I used stew macs sticky paper.. stays on no sliding.. handy tool.

Displaying 5 of 13
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Shown on page 11 of our latest catalog.