create-cad

Create and validate one dimensioned parametric CAD part, returning STEP as the primary artifact rather than a render-only image. Use for manufacturable mechanical geometry with explicit dimensions and

SKILL.md

GitHub

Create CAD

Catalog

  • Display name: Create CAD
  • Categories: Layout & Design, Utility
  • Status: Ready
  • Route label: STEP-first parametric CAD workflow
  • Tone: slate
  • Short description: Create and validate one parametric CAD part, returning STEP as the primary artifact rather than a render-only image.

What this skill does

  • Builds dimension-driven part geometry and exports a real STEP model with reproducible source.
  • Inspects bounding box, volume, topology and named features; preview imagery is secondary evidence.

How to use

Provide units, dimensions, functional features, tolerances, references and required exports.

Example

Create a STEP-first L bracket: 80×50×5 mm, two 6 mm base holes, one 8 mm upright slot, 3 mm fillets.

Workflow

  1. Extract a unit-explicit feature specification and flag missing functional dimensions.
  2. Create reproducible parametric source with a STEP-capable kernel; never fake CAD with an image model.
  3. Export STEP first, then optional mesh formats; render preview only from generated geometry.
  4. Re-open STEP and verify dimensions, bounding box, volume, features and manifold geometry.

User-facing output

  • Media type: One STEP model plus preview
  • Default quantity: 1
  • Content per image: One validated parametric part
  • Default layout: Source-preserving or dimension-defined format
  • Model policy: STEP-first parametric CAD workflow
  • Downstream use: Mechanical design handoff, not engineering certification