# Xiao — Visual BOM Brief

**Project:** XIAO-001 · G Nan Xiao  
**Date:** 2026-05-08  
**Note:** Images are placeholders — photograph parts at each stage and replace placeholders.

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## BOM Plate Layout

The visual BOM should be laid out as a grid of parts with part IDs, descriptions, and quantities. Suggested layout for xiao:

```
Row 1: [Body blank — walnut square stock, 26 in]
Row 2: [Scrap blank — same dimensions]
Row 3: [Foot plug — turned cork or hardwood]
Row 4: [Drill bits — pilot + finish, laid side by side]
Row 5: [Reamer]
Row 6: [Bore finish (BLO bottle)]
Row 7: [Exterior finish (Danish oil)]
Row 8: [Sandpaper strips wrapped on dowel]
Row 9: [Decorative wrap thread (optional)]
```

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## Hero Image Specification

Primary image: finished G Nan Xiao, vertical orientation, held loosely at playing position, natural light. Body should show:
- Embouchure notch detail at top
- All 8 tone holes visible
- Full body length in frame (suggest 4:3 crop, portrait)

Secondary image: body cross-section drawing (see `drawings/xiao-bore-profile.svg`)

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## Part Photos (populate during build)

| Part ID | Description | Photo file | Status |
|---|---|---|---|
| XIAO-BLK-001 | Walnut blank, unmilled | images/blank-unmilled.jpg | TODO |
| XIAO-BLK-001 | Blank, milled and centered | images/blank-milled.jpg | TODO |
| XIAO-DRILL-001 | Pilot bit mounted in headstock | images/headstock-setup.jpg | TODO |
| XIAO-DRILL-002 | Finish bit in chuck, scrap bore pass | images/bore-scrap.jpg | TODO |
| — | Bore measurement with telescoping gauge | images/bore-measure.jpg | TODO |
| — | OD turning on lathe | images/od-turning.jpg | TODO |
| — | Embouchure notch cut | images/embouchure-notch.jpg | TODO |
| — | Tone holes drilled (pre-voicing) | images/holes-drilled.jpg | TODO |
| — | Final instrument, all angles | images/finished-full.jpg | TODO |