Finding 01 · Check before export
Degenerate faces
Low-risk triangle cleanup candidate.
Safe preview
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.
- Safe repair preview
- Before/after diagnostics
- Clear report-only boundary
Check STL before repairBrowser-local first pass
Diagnostic bench
Start with a repair-readiness check
Use the STL checker to identify duplicate faces, degenerate triangles, normal mismatches, open-boundary hole signals, and non-manifold topology before choosing a repair path.
Check STL before repair44 → 0
Finding 02 · Critical review
Self intersections
Requires a stronger geometry engine or manual CAD review.
Report only
Inspection focus
Repair workflow for real print risk
The goal is to reduce failed prints while avoiding unsafe automatic edits.
- Check mesh health before choosing a repair path.
- Preview safe repair deltas before download.
- Keep unsupported geometry visible in the report.
Repair boundary
What V1 repair should include
V1 repair stays conservative and can later be upgraded with stronger native or agent-backed repair jobs.
Supported
- Degenerate face removal
- Duplicate triangle cleanup
- Normal recalculation preview
Report only
- Guaranteed watertight repair
- Complex self-intersection repair
- Wall thickness or slicer simulation
FAQ
Questions before the next print
Where does STL repair run?
The first phase keeps checking and safe repair preview browser-first and Worker-compatible. Heavy native repair can move to a separate backend only after demand is validated.
When should credits be deducted?
Public checking should stay free. Credits should start at private server repair exports, saved reports, larger files, or batch workflows.
Is the repaired STL guaranteed print-ready?
No. The report explains mesh health and safe changes, but slicer settings, material, support, orientation, and printer limits still matter.
Related diagnostics
Continue the diagnostic path
01
STL Repair Online
Repair STL files online with a browser-local checker, safe repair preview, and report-only boundaries for open edges and non-manifold geometry.
02
Fix STL File Issues
Find why an STL file fails in a slicer and preview safe fixes for duplicate faces, degenerate triangles, and normal mismatches.
03
STL File Repair Reports
Generate an STL file repair report with issue severity, safe repair actions, before/after deltas, and export boundaries.