Short scale tenor guitar

# Mini-Tenor Guitar                                                                                                       


This is a mini-sized 4-string tenor guitar, intended to be strung using either nylon strings, or extra-light gauge metal strings. 

Everything is printed, except:

* a set of tuners with 10mm posts. (I use [these](https://www.amazon.com/gp/product/B0789YL6JF/ref=ppx_yo_dt_b_search_asin_image?ie=UTF8&psc=1).)

* A set of light or extra-light steel tenor banjo or tenor guitar strings. These should be strings intended for a CGDA tuning.

* A 12 1/4 inch truss rod (I used [this from StewMac](https://www.amazon.com/gp/product/B07HPBZ3NH/ref=ox_sc_act_title_1?smid=A1BA2XBPZFTT2S&psc=1)).

* 2 m4x60mm screws to attach the neck to the body.

* 2 m4 hex nuts.

* a 4x1mm carbon fiber rod, used to reinforce the body inside of the vertical brace.

Assembly should be pretty obvious.

I recommend printing this from PLA. In my experiments, PLA is by far the best material that I've tried. PETG has too much flexibility, which seems to absorb some of the resonant vibrations in the body; ABS adhesion issues leave tiny micro-gaps in the body which completely ruin the tone.

## The Model

I started with a model written in standard OpenSCAD. That was a bit of a mess; I rewrote it partially using the BOSL libraries for OpenSCAD, which was a big improvement, but I was still struggling to make it come out the way I wanted, because honestly, OpenSCAD is a pretty terrible language.

So I wrote my own 3d modelling language.

The latest version is implemented in [Simplex](https://github.com/MarkChuCarroll/simplex), a 3d modelling language that I built on top of the Manifest library. I can't upload the model. files here, because printables doesn't allow unknown file types, but you can get them from my [github repos](https://github.com/MarkChuCarroll/simplex-tenor), which always contains the most up-to-date version.

Running the simplex model through the interpreter, you'll get a collection of products:

* mtenor-out-body-tail.stl: the bottom-most section of the body.

* mtenor-out-body-center.stl: the center section of the body.

* mtenor-out-body-neck.stl: The section of the body where the neck is attached.

* mtenor-out-fretboard-full.stl: a single-piece fretboard for large printers.

* mtenor-out-fretboard-[ab].stl: the fretboard split into two pieces for printing on normal-sized 3d printers. This includes guide-holes where you can insert 5mm pieces of filament as alignment guides, and cutouts for registration/alignment with the neck. The registration pegs are included in mtenor-out-mist_bits.stl.

* mtenor-out-neck-[abc].stl: the neck, divided into three printable pieces. Like the fretboard, this includes registration holes to use filament to align the sections for gluing.

* mtenor-out-misc_bits.stl: support plates, registration pegs, and fretboard inlays for assembly/glue-up.

* mtenor-out-assembled.stl: An image of the fully-assembled guitar, to show how the pieces should line up.

* mtenor-out-bridge.stl: a set of three different bridges; choose the one that gives you the most comfortable string-action.

* mtenor-out-stand.stl: a work-in-progress stand for supporting the guitar when you're not playing it.