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  • Truss rod inserts for the Fretboard Radius Jig
  • Truss rod inserts seated in the Fretboard Radius Jig router base
  • Fretboard Radius Jig set up for truss rod slot routing
  • Truss rod slot cut in a neck blank using the Fretboard Radius Jig
  • Truss rod inserts shown with mounting hardware
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Truss Rod Inserts for Fretboard Radius Jig

Truss Rod Inserts for Fretboard Radius Jig

$25.00
$25.00
Sale Sold out
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Ships in 3-4 business Days

This version of our Truss Rod Inserts are for those who purchased the Fretboard Radius Jig after May 24, 2025.

Truss Rod Inserts for Fretboard Radius Jig

These inserts lock the router base in a fixed, centered position so your Fretboard Radius Jig doubles as a truss rod slot router. Clean, straight channels without a second jig.

Note: The Fretboard Radius Jig is not included.

Important Compatibility Note:
If your current router base does not have brass inserts at centerline, you have an older version that is not compatible with these Truss Rod Inserts.

We've got you covered. Just contact us after purchasing the inserts, and we'll include a free updated router base with your order.

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FAQ

Which radius should I choose?

Here is how the common radii map to real instruments.

  • 7.25" Vintage Fender. Pre-1983 Strat and Tele, and vintage P and J Bass. The fussiest to set up, since notes will choke on bends unless the action stays a little higher.
  • 9.5" The modern Fender standard on both guitar and bass. If you only ever used one radius, this is it.
  • 10" PRS and some Music Man.
  • 12" Gibson. Les Paul and SG, and most modern four and five string basses.
  • 14" Modern Fender Ultra and Charvel.
  • 16" The shred end. Ibanez, Jackson, Schecter, and modern five and six string bass.
  • 20" Very flat. Extended range guitar and flat modern bass.

Metric 400mm and 430mm are also stocked, and we cut custom radii at no extra charge. Tell us the number.

 

Can the jig cut a compound radius?

No. It produces a single continuous radius along the full length of the board. Plenty of modern necks are compound, 10" to 16" being the common one, so it is worth being clear that this jig will not do that.