Mesh Repair

Turn a broken image-to-3D mesh (Trellis, photogrammetry) into a single watertight, manifold shell ready to slice. Runs entirely in your browser — voxel remesh to close holes and rebuild consistent walls, then guaranteed watertight via the manifold-3d kernel. Nothing is uploaded to a server.

Input & settings

Drop an STL or OBJ
or click to browse

Detail (resolution) 220

Voxels along the longest axis. Higher = finer detail + more faces (slower). ~220 is a good balance; drop to ~120 for a lightweight print file.

Wall thickness 2 vox

Blocky mode only: thickens the surface so open rims close into a solid shell. Ignored when “Smooth surface” is on.

Hole sealing 1

Bridges pinholes before thickening.

Simplify tolerance 0.0000

0 = keep full resolution. Higher decimates faces (manifold-3d), staying watertight.

Smooth surface (reduce voxel steps)

Meshes a signed-distance field so the surface follows the real geometry sub-voxel instead of snapping to the grid. Turn off for a blocky result where wall thickness applies (wide-open shells).

Discard floating fragments

Upload a mesh and hit Repair to see the before / after.