发现 01 · 导出前检查
Normal direction mismatches
Facet normals can be recalculated from triangle winding.
安全预览
Fast STL fixer
A quick STL fixer for common 3D print mesh problems.
Start with one upload, get a mesh health score, and run a conservative repair preview for supported issue families.
- One-step upload to report
- Safe repair action log
- Export gate stays explicit
Start STL fixer浏览器本地初检
诊断台
Upload your STL to start the fixer
The fixer checks common mesh defects first, then lets you preview only the repair actions that are safe in V1.
Start STL fixer9
发现 02 · 导出前检查
Duplicate faces
Repeated triangles are removed from the preview mesh.
安全预览
检查重点
When to use the STL fixer page
Use this page when you want the shortest path from upload to safe repair preview.
- Run a quick mesh health score before a print deadline.
- Confirm whether issues are safe to preview or report-only.
- Create a private repair artifact only after reviewing the preview.
修复边界
Fast does not mean risky
The fixer keeps risky edits out of the automatic path so a fast workflow does not over-promise geometry repair.
支持
- Common triangle cleanup
- Normal mismatch preview
- Before/after issue delta
仅报告
- Self-intersections
- Complex non-manifold edges
- Manual sculpting or CAD edits
常见问题
下次打印前需要了解的问题
Is this STL fixer automatic?
It can automatically preview safe repair candidates, but it still reports risky topology instead of silently editing it.
What makes a repair action safe?
Safe actions remove or recalculate mesh noise without trying to infer missing geometry or redesign the model.
Can I use it just as a checker?
Yes. You can stop at the issue report and use it as a diagnostic STL checker without creating an export artifact.
相关诊断
继续诊断路径
01
Free STL Checker
Upload an STL file to check mesh health, open-boundary hole signals, non-manifold edges, triangle counts, dimensions, and repairability.
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.