# Drawing Brief

## Required Sheets

1. VF-130-A4 body overview with approximate cavity, voicing, and hand position.
2. Section view showing cavity volume, wall thickness, windway, and labium.
3. Finger-hole area chart with undersize drill diameters and final measured
   diameters.
4. Mold split-line concept after shrinkage validation.

## Datum Scheme

- A: voicing centerline.
- B: mouthpiece/windway reference face.
- C: body midplane for hole layout and mold split discussion.

## Tolerance Notes

Volume, voicing, and hole area are validation variables. Drawings should label
starter dimensions as first-pass values until the measured body is logged.