Fretboard Radius Jig / Milling Jig Guitar / Fretboard

Update 20.02.2024:

7.25" radius tested and added

Update 16.02.2024:

9.5", 16", 18" radius tested and added

Update 14.02.2024:

20" radius tested and added

Update 09.02.2024:

10" and 14" radius tested and added

Labeling added

Currently included radii: 7.25", 9.5", 10", 12", 14", 16", 18", 20"

Leave me a comment with your radius wishes.

This is my interpretation of a fingerboard radius router.

I made it for my Katsu router, but I think it is also suitable for the Makita RT07xx.

I have created a slide without holes, so that another router can also be adapted.

The modules for the radius can be exchanged without having to dismantle the entire device.

I added holes to "lock" the parts with filament pieces.

All the joints are very tight, so some rework may be necessary to make them fit.

This is intentional so that nothing wobbles.

The placeholder mentioned below is not necessary if the fingerboard is already glued to the neck.

The thickness of the placeholder can also be varied if the fingerboard is thicker or thinner.

Or you can just leave it as it is and not take it soooo precisely, the deviation is very small.

I screwed the placeholder to the guide plate with two countersunk screws and attached the fingerboard with double-sided adhesive tape.

Additionally needed:

4x 608ZZ ball bearings

4x M8 screws (long enough, I took what was there)

4x washers (between ball bearings and carriage)

4x M8 nuts

1x 14cm x 100cm x 1.5cm guide plate (plywood / screen printing plate)

1x 10cm x 100cm x 2cm placeholder (plywood / screen printing plate)

I used ABS, I think PLA+ or other materials will work as well.

I printed the radii horizontally so that no layers are noticeable on the running surfaces.

For more stability of the sled, I realized that it is better to print it upright and not lying down.

I printed mine with Gyroid Infill and also filled it with epoxy.

Support structures are an advantage.

I used 25% infill.