The community had some notes on the old wiki:
Excellent discussion of additional tools needed: A question or three for the guitar makers out there - #25 by loudsimonet
See http://guitarbuilding.org/
Carbide Create files
Building Guitars with MeshCAM
GitHub - mnesarco/MarzWorkbench: FreeCAD Workbench for guitar design — FreeCAD workbench for designing guitars
CNC Files — CNC Accessories and Custom Woodworks — Bones Woodshop
3/4 scale guitar — Playable Guitar - Printable Without Supports by Solstie - Thingiverse [68]
D-Size Tele Body Blueprint Files[69]
CONTROL PLATES - CONTROL PLATES Suppliers from guitar parts depot [70]
Re: Guitars and signs I’ve made — variety of guitar designs done in CamBam
The Lancaster - Instrument Plans - ProjectGuitar.com
http://guitarscience.net/papers/guibook.pdf
luascript to create guitar body shapes for Vectric Vcarve: Acoustic Guitar Shapes - Vectric Customer
The "G" Thang Acoustic Guitar Design Tool
Neck Reset Formula
Tracing guitar bodies using Rhino 3D: Easy Guitar Drawing for Custom Guitar Bodies, Part 1 [CNC / CAD Project] - CNCCookbook: Be A Better CNC'er (includes video)
https://www.electricherald.com/
Grabcad
https://grabcad.com/library/gibson-sg-1
https://grabcad.com/library/gibson-flying-v-83-1
Guitar Templates Archive | Electric Herald
Schablonen und Zeichnungen - GitarreBassBau.de
https://sites.google.com/site/guitarplanscollection/pdf-files
Guitar Templates Archive | Electric Herald Fender Stratocaster Guitar Templates | Electric Herald
https://www.reddit.com/r/Luthier/comments/dbjst8/posting_this_pickup_wiring_chart_because_ive_seen/
https://imgur.com/a/MlJXgOw
GitHub - Audiohotshot/fretgenerator360: Fretboard generator for guitarbuilders in fusion360
The subreddit: https://www.reddit.com/r/Luthier/ has a number of useful links in its sidebar
CAM page lists:
LoboCNC Fretboard.exe at http://jrkerr.com/lobocnc/userapps.html
Fretboard template generator
Examples: