So, the nut slot for a .010 string should be a .014?
Correct.
Out of trust and respect, I have been asked not to publish the actual documents because they are considered a "trade secret" and the service specification sheets are marked both "Confidential" and "Do Not Duplicate/Distribute."
As a side note, Gibson guitars are ALL fitted with "Gibson Brite Wire" strings and those are made exclusively by D'Addario.
Prior to the 2015 General Revisions of their specs, Gibson was using +.004" across the board as a target specification on all models. (whether you agree or not, this is what the guitars were being set-up to on the bench).
For 2015, Gibson revised their assembly line/warranty specifications and, as you can see, they changed the slots in the nut from the previous (2015-Earlier) specification of + .004" to as high as .012" above string gauge on the low 'E' string and "tightened" the spec to only +002" on the 'A' and 'D' strings.
Gibson's specification department did not give a reason for the change, only noting that the build process is continuously evaluated and changes are made to improve functionality.
This specification is the same regardless of nut material. Brass, Titanium or Tek-Toid all adhere to the same chart specifications.
| Gibson Assembly Speciations - String Gauge All Les Paul Models |
|---|
| |
|---|
| |
| E: | 0.046" |
| A: | 0.036" |
| D: | 0.026" |
| G: | 0.016" |
| B: | 0.011" |
| e: | 0.009" |
| Gibson Assembly Speciations - Dimensions of String Slots | |
|---|
| |
| E: | 0.058" |
| A: | 0.048" |
| D: | 0.038" |
| G: | 0.028" |
| B: | 0.019'' |
| e: | 0.014" |
In my opinion, +.004" (which is the current Fender Blueprint Specification for USA models) is the best overall setting and it is what I use when setting up nuts from scratch as SOP. However, say for example, a client complained about the nut slot being too wide in his Gibson Les Paul. The warranty tech would compare the actual nut slot measurement to the chart specification and no authorization for changing out the nut would be authorized.
2013 was the last year Gibson used Corian for nuts. They switched to Tek-Toid for all 2014 Models.
In 2017, the Les Paul Standards received the Aluminum Bridge and Tailpiece and that continued through 2021 on the Standard models:
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In 2018, Gibson began using a cryogenically hardened nickel silver fret material.
In 2019 for the 2020 model year, Gibson switch to a "proprietary spec" Graph-Tech nut on all Les Paul Models.
In 2020, Gibson made a published switch from .009" x .046" to .010/.013/.017/.026/.026/.046 Strings on Les Paul Models
In 2021, Gibson switched to a "proprietary spec" .090" x .055" fretwire from Jescar.