Safe repair candidates include degenerate faces, duplicate faces, and basic normal direction mismatches after fixture validation.
STL repair
Repair common STL file issues without over-promising the result.
Run a mesh check first, apply safe repairs only where they are supported, and keep complex geometry visible in the repair report.
Complex non-manifold geometry, self-intersections, and thin walls are reported clearly instead of being forced into risky automatic edits.
Paid repaired STL downloads are designed to be generated and authorized server-side, not hidden behind a front-end button only.
Every V1 repair action must pass the repair feasibility gate before it becomes a normal export path.