# K2 R45 file compatibility map

| Branch | Location | Shared assembly coordinates | Watertight claim | Intended use |
|---|---|---:|---:|---|
| Registered reference assembly | `MODELS/ASSEMBLY/` | Yes | No | Full-suit shape and envelope inspection |
| Registered components | `MODELS/REGISTERED_COMPONENTS/` | Yes | No; 0/135 watertight | Component placement, zone isolation, lineage and future matching |
| Browser zone meshes | `MODELS/WEB_ZONES/` | Yes | No | Local WebGL inspection and exploded views |
| R44 local source parts | `MODELS/LOCAL_SOURCE_PARTS_R44/` | No | Not re-certified in R45 | Separate source-piece / future print-solid matching branch |
| R44 interface coupons | `MODELS/INTERFACES_R44/` | Separate local studies | Previously checked as 9/9 watertight | Bench coupons for growth, service, carrier, OLED, NodeMCU, and manual-access studies |

## Do not mix these assumptions

- A file being in the correct assembly position does not make it a closed printable solid.
- A source-local part being a plausible solid does not mean it has a solved R45 placement transform.
- A browser zone is not a proposed print split.
- Bounding-box fit on a 400 × 400 × 450 mm volume does not establish orientation, supports, wall thickness, strength, or successful printing.