# Assembly Manual

## Scope

This manual covers the VF-130-A4 lab body. A slip-cast version should wait
until the hand-built or sealed proof body validates volume, voicing, and hole
area.

## Steps

1. Weigh clay and form a simple closed cavity with an inspection/fill opening.
2. Shape the body around the 130 cc target volume, leaving extra wall thickness
   near the voicing.
3. Cut a conservative windway/window and smooth the labium edge.
4. Measure wet cavity volume by water fill and record in `validation.csv`.
5. Dry slowly; measure shrinkage against test tiles.
6. Seal the proof body if needed for first acoustic tests.
7. Establish first sound before drilling tone holes.
8. Drill tone holes undersize according to the area plan.
9. Tune by gradual enlargement, recording final diameters and cents error.
10. Fire or finish only after the acoustic target is stable.
11. Re-measure cavity volume after firing or sealing.
12. Update `mold-workflow.md` with the measured shrinkage before any slip-cast
    mold is cut.

## Stop Conditions

- Stop if the cavity leaks; pitch observations are meaningless until sealed.
- Stop if volume differs by more than 10 cc; update design before drilling.
- Stop if first sound requires high breath pressure only; adjust voicing before
  tuning holes.