4" Radius Blocks Essential Set, Set of 5

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4" Radius Blocks Essential Set, Set of 5

Item # 0431
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List Price $57.25
Your Price $45.80

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4" Radius Blocks Essential Set, Set of 5

About This Item

Save money with this set! Our 5 most popular sanding blocks for spot-leveling frets and fingerboards. Just add sandpaper. They make great fret-gluing cauls, too!

Create an accurate radius quickly and without guesswork.
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

Set includes the 5 most popular fretboard radii used in guitar building and repair:
7.25", 9.5", 10", 12", 16"

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

These 4" blocks are used for spot leveling, and can also be used as a radiused clamping caul when gluing frets. The longer 8" blocks are better for consistent, full-fingerboard radius leveling.

Dimensions: 4" (101.60mm) long x 2-3/4" (69.85mm) wide

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.

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  • 4.86 average rating from 14 reviews
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Useful and ocnvenient...

(Customer's Reviews)

These are good quality sanding blocks. You can make your own, of course, but for the price of these it's not really worth the time it would take to get the curve exactly right. My only mild complaint is that the set does not include the 14" radius, which arguably is one of the most commonly used on all sorts of guitars.


Good as it seems

(Customer's Reviews)

These blocks deliver what they promise, very straight forward, they make things very simpler, with the quality only Stewmac can deliver


Perfectly crafted...

(Customer's Reviews)

I made this gift to my luthier since he lost a previous set. Wish they had a lacquer finish or some sort of protection to the wood... nothing you couldn't do yourself.

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StewMac PDF Catalog, page 11 See 4" Radius Blocks Essential Set, Set of 5
on page 11 of our StewMac Catalog PDF

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