Repair 3MF and STL models without losing colors
Orca shows ⚠ “non-manifold edges” and its Windows “Repair” button wipes the paint? This free tool fixes only the problem edges: paint, settings and plates stay exactly as they were. Your file never leaves your browser.
What it does
- Scans a 3MF or STL and shows, per object, over-shared, open and reversed edges, degenerate and duplicate triangles, unwelded vertices and the number of painted triangles.
- Repairs without rebuilding the mesh: triangles and their paint are kept; micro cracks left by scanning or decimation are stitched, small holes are filled and zero-thickness membrane fragments are dropped.
- Shows a before/after table; the result is never worse than the start.
- Handles large files with a progress bar (stage, percentage, elapsed and remaining time) and a Cancel button.
How to use it
- Drop your 3MF or STL onto the upload area (Bambu Studio, Orca, Snapmaker Orca, MakerWorld and Printables files all work).
- Read the scan result: it lists the problem edges per object.
- Press the blue “Renkleri koruyarak onar” button (“repair while keeping colors”).
- Check the before/after table, download the repaired file and open it in Orca.
Why not use Orca’s “Repair”?
On Windows the button hands the model to the system’s 3D repair service, which rebuilds the mesh. For multicolor models the per-triangle paint cannot be carried over, so the colors are lost. Details: Orca “Repair” removes colors and Non-manifold edges.
Frequently asked questions
Why does Orca’s “Repair” erase my colors?
Windows’ 3D repair service rebuilds the mesh; the paint is attached to individual triangles and is lost with the old ones.
Is the file uploaded?
No. Scanning and repair run in your browser; nothing is sent to a server.
Does it work on big files?
Yes. For files with millions of triangles there is a progress bar with elapsed and remaining time, and a Cancel button. Very large files need browser memory (up to 600 MB per file).
Is the result ever worse than the original?
No: if the tool cannot improve the file it stays as it was.
Does it need an account?
No. Model Repair is free and open to everyone. The interface is currently in Turkish; your browser’s translate feature works.