Uses drill bushes to secure the alignment of the drill holes, your 3d printer likely has very good x,y positioning accuracy but the 3d print material is just not suitable to position a drill. Drill bushes are hardened steel bushes sized to push into jig/fixture with a central hole that will guide a drill of the right size.
This drilling jig is sized to suit my Prinatble Mitre box also available on cults3d and the templates that go with it available here and here
BOM
Drill bushes are not super easy to come by but it’s the right way to construct a template like this for accurate and long term use.
You can find drill bushes from the below links amongst others.
[McMaster carr 96977A150_Press-Fit Drill Bushing with Head]
[https://www.berger-tools.co.uk/Drill_Bushes/Din172a_Headed_Drill_Bush_Steel_Hardened/]
Or search for DIN172A drill bush Ø3.0mm
Printing
Standard settings are fine, but add a third perimeter
Assembly – see exploded drawing
Press the drill bushes in with a drill press, arbor press or tap them in with a mallet.
Usage
The jig is located on the end of the fretboard blank by 2 dowel pins Ø3mm x 20mm, these can be set so the fretboard is started at the 0 fret or at increment of 6.35mm 11.35mm and 16.35mm from the end of the 0th fret.
The dowels can be moved to suit between jobs, and are secured by 3 x M4 x 35mm Cap head screws.
As a hobby guitar builder I have made many of the tools needed to build guitars including for necks and fret work.. A lot of these i have made or remade by 3d printing. I will be uploading all them to another site where I can ask for a small $ so i can recoup some of my Fusion licence fee :( however those that I offering for free will be replicated here. See my collection of guitar making tools here.
The author marked this model as their own original creation.