U225X PUBLIC RECORD / CAD-011
TITLE: FreeCAD STL-to-STEP conversion and limitations
STATUS: Needs Retest
CATEGORY: CAD / Scanning / Automation
TYPE: how-to

Converting an STL to STEP can create a usable exchange file, but it does not recreate a clean parametric model. The public workflow emphasizes mesh cleanup, scale checks, reference geometry, and remodeling critical features.

GOAL: Recover usable geometry without mistaking a converted mesh for a native design.

EQUIPMENT
- FreeCAD
- Representative test model
- Measurement or inspection method




STEPS
- Inspect and repair the mesh.
- Confirm scale with a known dimension.
- Convert only when the downstream tool requires it.
- Remodel critical features with clean sketches and constraints.
- Export and inspect the result.


TROUBLESHOOTING
- A visually correct model can still have bad units, references, or manufacturing intent.
- Keep source files and exported files distinct.
- When automation is involved, test a copy before changing a production directory.



RESULT
Reference workflow with known limitations.

SOURCE NOTE
This is a public-safe summary assembled from the local content manifest and recovered notes. It is not a raw conversation transcript. Measurements, files, and outcomes remain marked as provisional where the source did not preserve enough evidence.

PROPERTY OF U225X / PUBLIC-SAFE IMPORT