ltb-bridge-designer

Acoustic and electric bridge geometry: scale-to-bridge placement, pin positions, break angle, string tension, archtop floating bridge (Benedetto), electric bridge presets, Floyd Rose routing, saddle compensation, CAM presets, and DXF export.

Source of truth: luthiers-toolbox — populated via Staged Copy Publish (see SPRINTS.md there).

Layout

src/ltb_bridge/
  calculators/           # bridge_calc, bridge_break_angle, acoustic_bridge_calc, string_tension
  instrument_geometry/
    models.py            # InstrumentModelId, specs (shared with bridge/neck)
    neck/neck_profiles.py
    bridge/              # geometry, placement, compensation, archtop_floating_bridge, electric_bridges, floyd_rose_tremolo
  api/
    bridge_router.py
    bridge_presets_router.py
    bridge_export_router.py
  main.py
scripts/populate_imports.py   # optional re-sync helper

API

pip install -e .
uvicorn ltb_bridge.main:app --reload --host 0.0.0.0 --port 8000

• GET /health
• GET /docs
• POST /api/instrument/bridge, /api/instrument/bridge/pin-positions, GET /api/instrument/bridge/options
• Presets: /api/cam/bridge/... (see OpenAPI)
• DXF: POST /api/cam/bridge/export_dxf

Dependencies

Python 3.11+. ezdxf is required for archtop DXF generation in archtop_floating_bridge.

License

See LICENSE.