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STL Repair

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Mesh repair

Fix & export

3 free exports Sign in to use your free repaired downloads.
Model

Drop a model, then hit Fix model if anything is still open.

Sign in to use your free repaired downloads.

Analysis & thresholds
Thresholds

Copper faces exceed the support angle. Red faces are degenerate triangles.

Load a model to see analysis.

Repair the way slicers do

  • Import welds vertices, drops junk faces, and orients normals. It does not fill holes — that often ruins bookmarks, lattices, and color interfaces.
  • Fix model runs only on open volumes. Closed multi-color 3MF objects stay separate and are not unioned into one grey STL.
  • Download Bambu / Orca 3MF to keep AMS slots. STL is geometry-only. Dense wrecks are not silently remeshed; finish those in your slicer if needed.
  • Mesh repair powered by meshseal (MIT) — https://github.com/jkavalik/meshseal Solid repair is a last step on a single open volume, not a flatten of the whole file.
  • Files stay local. Overhangs and thin walls are not auto-fixed. After download, cut oversized models with the STL Cutter.