Fix STL Files Online — Free 3D Mesh Repair
Repair broken STL files for 3D printing. Fix non-manifold edges, fill holes, correct normals. Free, browser-based, no upload required.
What is STL Mesh Repair?
STL files from 3D modeling software often contain errors that prevent successful 3D printing. Common issues include non-manifold edges, flipped normals, holes in the mesh, and degenerate triangles. JustFixSTL detects and repairs these issues automatically.
Common STL Issues We Fix
- Non-manifold geometry — edges shared by more than two faces
- Flipped normals — faces pointing the wrong direction
- Holes — gaps in the mesh surface
- Degenerate triangles — zero-area faces
- Duplicate faces — overlapping triangles
- Isolated vertices — unused vertices
Related Pages
Fix your STL file now
Drop your file into the tool above, or visit the home page to learn more.
Go to Home Page