# Freecad Automation Core Capabilities

> Sub-skill of freecad-automation: Core Capabilities (+4).

- Skill: `vamseeachanta/freecad-automation-core-capabilities` (Agent Skill)
- Install (CLI): `npx skillmds@latest add vamseeachanta/freecad-automation-core-capabilities`
- Raw SKILL.md: https://api.skillmd.com/api/skills/vamseeachanta/freecad-automation-core-capabilities/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: vamseeachanta (https://skillmd.com/u/vamseeachanta)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/vamseeachanta/freecad-automation-core-capabilities

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# Core Capabilities (+4)

## Core Capabilities


- **CAD Automation**: Script-based FreeCAD operations
- **Batch Processing**: Parallel file processing with pattern matching
- **Parametric Design**: Design tables and parameter variations
- **Assembly Management**: Constraint solving and assembly creation
- **FEM Preprocessing**: Mesh generation and boundary conditions
- **Drawing Generation**: Automatic dimensioning and views
- **Natural Language Processing**: Convert commands to CAD operations
- **Script Generation**: Auto-generate Python scripts from prompts

## Marine Engineering Specialization


- Hull NURBS generation from HullProfile stations (scipy fallback without FreeCAD)
- Hydrostatic analysis: displaced volume, waterplane area, KB, BM via section integration
- Stability calculations
- Mooring system configuration
- Structural analysis preprocessing

## FEM Analysis (v2.0)


- CalculiX INP file generation from gmsh mesh data
- FRD/DAT result parsing (displacements, von Mises stress)
- End-to-end FEM chain: geometry → mesh → solve → extract
- Plate-with-hole Kt validation (Kt ≈ 3.0)

## Design Table Studies (v2.0)


- YAML-driven parametric sweeps (cartesian product of parameters)
- Process-level parallelism via multiprocessing (FreeCAD not thread-safe)
- Comparison YAML output for all variations
- Manifold validation: watertight check, self-intersection, normal consistency

## Integration Points


- **OrcaFlex**: Data exchange for hydrodynamic analysis
- **AQWA**: Diffraction analysis geometry
- **Signal Analysis**: Module connectivity
- **REST API**: External system integration