# Risks | Risk | Likelihood | Impact | Mitigation | | --- | --- | --- | --- | | Tongue root heat damage or cracks | Medium | High | Preserve 2.5 mm root radii, run coupons first | | Weld warp shifts pitch | Medium | High | Short TIG stitches, tune after welding | | Starter beam model misses root stiffness | High | Medium | Prototype C3/F#3/B3 and update lengths | | Secondary tongues cause cross-talk | Medium | Medium | Treat as optional color feature | | Rack damping kills sustain | Medium | High | Rubber isolation and light retainers | | Plasma kerf makes rough tongue roots | Medium | High | Prefer laser; reject jagged roots | | All twelve boxes cut before validation | Medium | High | Hard coupon/prototype gate | | Public misuse as build-ready | Medium | Medium | Keep private-review blueprint wording | ## GitHub Publishing `gh repo create --private --push` succeeded. No local-only fallback TODO is required.