Mesh repair

Fill holes, weld vertices, unify normals, and remove degenerate or non-manifold faces.

9 tools

Mesh weld and clean (local)

Weld vertices and remove degenerate or duplicate triangles locally in your browser. STL, OBJ, PLY, 3MF, GLB, and glTF input; binary STL output.

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TopologyReady

Fill mesh holes (local)

Fill simple mesh boundary loops locally in your browser. STL, OBJ, PLY, 3MF, GLB and glTF input; binary STL output.

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TopologyReady

Mesh topology and manifold check (local)

Check mesh manifold, watertight, shells, boundary loops, Euler characteristic, genus and self-intersections locally. STL, OBJ, PLY, 3MF, GLB and glTF input; no upload.

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TopologyReady

Repair non-manifold mesh (local)

Repair non-manifold edges and bow-tie vertices in your browser. STL, OBJ, PLY, 3MF, GLB and glTF input; binary STL output; no upload.

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TopologyReady

One-click mesh repair (local)

Repair STL, OBJ, PLY, 3MF, GLB or glTF meshes in your browser: weld vertices, fix non-manifold edges and bow-tie vertices, close holes, unify normals and remove self-intersections. No upload.

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TopologyReady

Merge overlapping shells (local)

Merge overlapping closed 3D shells into one watertight STL locally. Split components, check self-intersections and union with Manifold WASM; no upload.

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TopologyReady

Self-intersection repair (local)

Remove self-intersecting faces locally and safely close simple holes. Six mesh input formats, binary STL output, explicit boundary and fill reporting, no upload.

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TopologyReady

Voxel remesh (local watertight rebuild)

Voxel remesh broken or self-intersecting meshes locally into watertight binary STL. Choose 48–128 resolution, get manifold/self-intersection reports, no upload.

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NormalsReady

Unify mesh normals (local)

Unify triangle winding and fix flipped normals locally in your browser. STL, OBJ, PLY, 3MF, GLB and glTF input; binary STL output.

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Slicer import fixes

When a slicer will not open a model, diagnose the file before reinstalling or re-exporting blindly. Pick your slicer for a local import check.

Explore

Cura

Check an STL, OBJ, PLY, 3MF, GLB or glTF for corrupt headers, empty geometry, open boundaries, non-manifold edges and unit mix-ups before you blame Cura. The model stays in this tab.

Open diagnostic

Bambu Studio

Diagnose an STL or 3MF that Bambu Studio will not open: header damage, empty geometry, open boundaries, non-manifold edges and scale errors. Local analysis, no upload.

Open diagnostic

PrusaSlicer

Check why PrusaSlicer shows no layers, a tiny model or an import error. Inspect headers, empty meshes, open boundaries, non-manifold edges and units locally before re-exporting.

Open diagnostic

OrcaSlicer

If OrcaSlicer fails to load a model, check the file signature, empty geometry, open boundaries, non-manifold edges and scale before trying another download. Local diagnosis, no upload.

Open diagnostic