Ukulele Prototype
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Bill of Materials
- Carbon fibre stiffening rod (6x4x500mm) x 1: https://www.reidtimber.co.uk/fret-wire-and-truss-rods/guyker-carbon-fiber-neck-reinforcing-rod
- Ernie Ball ball end ukulele strings x 1: https://www.amazon.co.uk/Ernie-Ball-Concert-Soprano-Ukulele/dp/B07N26D2T8
- 6 no. M4x20 countersunk machine screws x 1:
- 2 no. M4x16 countersunk machine screws x 1:
- 2 no. M4 washers x 1:
- Graphtech Tune-a-lele Tuners x 1: https://www.alegree.co.uk/products/graphtech-pn-7551-no-ratio-tune-a-lele-ukulele-tuners?_pos=3&_psq=tun&_ss=e&_v=1.0
Description
During covid lockdowns, I got into building my own guitars. So far I’ve built 6 electric guitars. For a while now I’ve been developing ideas for acoustic ukuleles and guitars. When I saw the musical instruments competition, I thought it was a great opportunity to further develop and prototype these ideas. Some of these are things that would be difficult, if not impossible to do with traditional guitar and ukulele construction materials/techniques. For example I wanted to introduce a double-curvature into the sides, thinking that this would improve the ergonomics. Traditionally the sides of a ukulele are bent from sheet wood, which makes forming doubly-curved surfaces impossible.
A few features of the prototype ukulele are:
- An ultra-thin body with doubly-curved sides that make it far more comfortable to hold and play than traditional models
- A striking visual appearance, utilising the AMS to create binding style accents as well as a translucent soundboard, showcasing the internal structure
- It features a removable back plate, allowing full internal access for maintenance etc
- The neck is a bolt-on design, more akin to a Fender electric guitar. The fixings are hidden by the back plate. The fretboard and frets are integrated.
- The unusual bracing structure for a ukulele or guitar is based on a highly efficient I-beam, but adapted to suit 3d printing without supports.
- Only 6 3d-printed parts and a couple of purchased components.
- Also includes a stand, designed specifically for this ukulele as its so thin it doesn't fit properly in the stands I have.
I only finished assembly the prototype in the final 24 of the competition so my experience with it is limited. That said, I have strung it up and it is playable. Time will tell how well it lasts structurally, but I suspect it’ll be fine. So far it feels comfortable, looks great and sounds ok.
Also worth noting that I used Elegoo's PLA Galaxy Purple but I think Bambu's will work just as well.


























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