# Acoustic Violin Design

## Intent

Create an honest L2 acoustic violin packet that captures the standard setup
geometry and the open engineering gaps before any claim of build readiness.

## Readiness

L2 scaffold. Use for design review, drawing planning, and sourcing review. Do
not treat this as a final luthiery method or validated arching plan.

## Governing Model

Open strings use Mersenne-Taylor. Body response is not reduced to a simple
closed-form model in this packet; arching, graduation, bridge, soundpost, and
air/body modes must be validated empirically.

```text
f = (1 / (2 L)) * sqrt(T / mu)
```

## Baseline Assumptions

| Parameter | Baseline | Notes |
| --- | ---: | --- |
| Scale length | 328 mm / 12.91 in | Standard violin vibrating length |
| Tuning | G3-D4-A4-E5 | A4 = 440 Hz reference |
| String set | Standard 4-string violin set | Use published tensions |
| Body length | about 14 in / 356 mm | Exact outline TBD from drawing |
| Top/back | Spruce top, maple back | Graduation not finalized |
| Neck angle/projection | TBD from setup drawing | Critical to bridge height/action |
| Target total tension | about 45-55 lbf | Verify with selected string set |

## Tension And Setup Notes

- Fit bridge and soundpost under low tension, then bring strings up gradually.
- Check neck projection before final bridge height.
- Record action, bridge foot fit, soundpost location, and open-string pitch
  stability.

## Known Gaps

- No arching/graduation map.
- No neck-set drawing.
- No soundpost/bridge fitting evidence.
- No live sourceability check.
- No acoustic measurements.