good-enough/core-docs/good-enough-4u0-ship-light-...

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# Good Enough 4u0 — Ship-Light Spec
**File:** `good-enough-4u0-ship-light-spec.md`
## Purpose
Minimize shipping weight/cost by only producing & shipping **custom parts**. Everything else is sourced locally as COTS.
## Rules
1. **Split BOM:**
- *Ship:* Only non-standard parts (3D printed, CNC routed, laser cut, etc.).
- *Source Local:* All Anchor COTS and fasteners.
2. **Tool Floor:** Define the **minimum tool set** (e.g., hacksaw, drill, screwdriver). No specialty tooling unless unavoidable.
3. **Cut List:** If local COTS require cutting, include simple measurements.
4. **Fastener Discipline:** Stick to **common screw/bolt sizes** (M3/M5/M6 or 1/4″/5/16″/3/8″). No obscure threads.
5. **Flat-Pack Ideal:** Designs should aim to ship flat for minimal volume.
## Documentation Requirements
- BOM table with two columns: *Ship* vs *Source Local*.
- Tool Floor checklist.
- Cut List with loose tolerances (e.g., “±5 mm is fine”).