RapidDraft synthetic FreeCAD prompt¶

    Candidate: Flap tucker arm
    Pilot: WEBASTO
    Revision: REV B
    Material: 42CrMo4

    Generate a mechanically plausible, feature-rich FreeCAD part that looks like a realistic engineering demo asset instead of a generic primitive.

    Base geometry:
    Lever arm with pivot hub, follower end, and weight-reduction pocket.

    Key features:
    - pivot hub

follower end
lightening pocket
pivot bore
stop-interface hole
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Critical dimensions:
- 160 x 45 x 18 mm
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- Arm shortened by about 6 mm
- Pivot region accepts a hardened bushing in Rev B
  
  Revision intent: Generate the changed follow-up revision and make the revision delta mechanically visible.
  
  Documented Rev B delta: - Shorten the arm by about 6 mm. - Increase the pivot bore size to represent a hardened bushing insert. - Refine the lightening pocket to preserve stiffness in the shorter arm.
  
  Realism rules: - Keep the geometry manufacturable and parametric-looking. - Preserve the overall part identity between revisions. - Make the revision change obvious enough for RapidDraft diff and release-review storytelling. - Export a single STEP-compatible solid or compound. - Avoid customer-specific IP and treat this as a synthetic review artifact.
  
  Output contract: - Write a standalone FreeCAD Python script. - The script must export the final STEP file to sys.argv[1]. - Keep the script headless-safe.