2.75″ wide. 3 blocks. Your choice of radii.

A set of three radius sanding blocks for setting fretboard profile during a new build, restoring the radius during a refret, or leveling frets to the board's existing curve. Standard 2.75″ width fits regular six-string and most narrow-spec bass fretboards.

Radius & Length

Lengths

• 4″ for spot work
• 8″ and 10″ for general fretboard sanding

Radii

• Imperial: 7.25″–30″
• Metric: 390mm–430mm
• Flat
• Custom: email us for a radius we don't list, no extra charge

Sandpaper

Sized for 2.75″ wide adhesive-backed sandpaper. 3M Stikit Gold rolls from StewMac fit clean with no overhang.

Material

3D-printed in PLA. Reasoning is in Why We Use PLA. Covered by our lifetime warranty if any block ever fails.

Working on a full build?

The Fretboard Radius Jig establishes the radius with a router in under ten minutes. The blocks then smooth the board after, a couple of minutes per grit. Many builders run both: jig for stock removal, blocks for finishing.

Want different quantities or a single block?

Buy single blocks at Radius Sanding Block (2.75″ Wide).

Specs