> For the complete documentation index, see [llms.txt](https://kms104.gitbook.io/3d-printing-ukuleles/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kms104.gitbook.io/3d-printing-ukuleles/material-details.md).

# Parts and Material Details

Details of the hardware needed to purchase.

{% hint style="info" %}
I specifically made the designs modular so that I and others can experiment with different designs and customizations.

I have no affiliation with Amazon nor do I receive any compensation from any vendor (not that I am against that).
{% endhint %}

## Tuning Mechanisms

{% hint style="info" %}
I have used both chrome plated and gold-plated tuners. More expensive tuners are available. If you use a different tuner, you might need to drill pilot holes or modify the head design to accommodate different dimensions.
{% endhint %}

### Gold-Plated (Wave MOD1-1-2 design)

The current Wave (tenor-sized) head design fits the BQLZR grommets and has pilot holes is designed for the BQLZR Gold-Plated 2R2L Tuning Peg Machine Head Tuners For Ukulele 4 String Guitar available from Amazon (US) for around $10. This model has a different hole pattern than the chrome tuners below.

This model has the same grommet and screws sizes as the chrome version.

![](https://966603259-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MSV3Je-C2kTZTVekW9s%2F-MSXZc6MD21GCPzD1OCS%2F-MSXceV7Zeex99RctRRu%2Fimage.png?alt=media\&token=f90bd834-4725-4a7b-af19-c1d48a8836cf)

![Wave Ukulele head design showing print-in-place pilot holes for the BQLZR Gold-Plated 2R2L Tuning Peg Machine Head.](https://966603259-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MSV3Je-C2kTZTVekW9s%2F-MSXZc6MD21GCPzD1OCS%2F-MSXj0UUgrRY4fZnxw_H%2Fimage.png?alt=media\&token=8320d0d7-e079-4802-965f-030012e4e197)

### Chrome Design

The 2020 Christmas Concert-sized Ukulele head design is matched to the BQLZR Chrome Tuning Pegs Machine Heads 2R2L For Ukulele available from Amazon (US) for \~$10.

![](https://966603259-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MSV3Je-C2kTZTVekW9s%2F-MSXZc6MD21GCPzD1OCS%2F-MSXew0YqaFnbrXuW5_-%2Fimage.png?alt=media\&token=e0d76abc-5897-4757-9957-f88eee5fb07b)

## Mounting Screws

{% hint style="info" %}
The modular bolt-on design will help with repair and incremental improvements
{% endhint %}

![Wave ukulele neck design showing placement of fretboard and nut mounting holes](https://966603259-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MSV3Je-C2kTZTVekW9s%2F-MSXZc6MD21GCPzD1OCS%2F-MSXjapp82CJdZAuTUQ8%2Fimage.png?alt=media\&token=8a8b1a84-a85f-4ff0-97a5-7bb0f9af3005)

### Fretboard and Nut Small Screws M3 x 6 mm (and maybe also 8 mm)

Use to attach the fretboard and nut to the neck. I like the iFlight M3 Titanium Hex Allen Socket Button Head Screws because they are titanium. Feel free to substitute other materials. 

I often use the 8 mm screws for attaching the nut and the 6 mm screws for attaching the fretboard.

![](https://966603259-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MSV3Je-C2kTZTVekW9s%2F-MSXZc6MD21GCPzD1OCS%2F-MSXhi632UNKEG1KE226%2Fimage.png?alt=media\&token=03ce9dc2-81ad-4c32-8cf1-8cd1534b02af)

### Neck to Body Large Screw (M5 x 50 mm)

![Wave ukulele neck to body joint and screw location](https://966603259-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MSV3Je-C2kTZTVekW9s%2F-MSXZc6MD21GCPzD1OCS%2F-MSXkO9eFDxJUmGX6ORS%2Fimage.png?alt=media\&token=7f456189-ab71-48fb-a3a1-644ec0b57c0d)

Both the 2020 Christmas design and the Wave design use a dovetail joint to hold the neck in place. The screw provides extra holding since the ukulele is basically made of plastic and prevents vertical movement.

I used something like the uxcell M5 x 50mm Full Thread Button Head Socket Cap. Feel free to substitute other M5 screws as long as they can fit into the screw opening (green arrow in picture).

![M5 x 50mm screws for attaching the ukulele neck to the body](https://966603259-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MSV3Je-C2kTZTVekW9s%2F-MSXZc6MD21GCPzD1OCS%2F-MSXls6X3wNebLUvL7LG%2Fimage.png?alt=media\&token=642221b8-d88b-471d-a128-8ed28602f3b6)

### Neck Stiffener - Carbon Fiber Bars 2mm x 10mm 1000mm

I found that the necks were not stiff enough on their own. Using carbon fiber bars provides good stiffness with very little additional weight. Example: [2mm x 10mm 1000mm - PULTRUDED-Flat Carbon Fiber Bar](https://www.amazon.com/2mm-10mm-1000mm-PULTRUDED-Flat-Controlled/dp/B07KXJ2P96/ref=sr_1_10?dchild=1\&keywords=Carbon+Kevlar+Supply\&qid=1612378391\&rnid=2941120011\&s=industrial\&sr=1-10). Superglue the bars into the neck after gluing the neck pieces together.

{% hint style="info" %}
Take appropriate precaution to protect yourself from the carbon fiber dust when cutting the bars to fit
{% endhint %}

![Carbon fiber bars for stiffening the neck](https://966603259-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MSV3Je-C2kTZTVekW9s%2F-MSd6pdtbw7nI9EWuN2u%2F-MSdEd_2dj2be0mpomWa%2Fimage.png?alt=media\&token=b3fbab28-ac7b-4075-9a52-847e4a51d003)