3MF errors and how to fix them
The most common problems with 3MF files in Orca, Snapmaker Orca and Bambu Studio: what they mean, why they happen and how to fix them.
Invalid values found in the 3mfThis message means a setting inside the 3MF is outside the range Orca accepts. The most common cause is the 0 and -1 values that mean “auto” or “default” in Bambu Studio files.Non-manifold edgesA model’s surface must form a closed shell: every edge must be shared by exactly two triangles. If an edge belongs to a single triangle (an open edge) or to more than two, the slicer shows the “non-manifold edges” warning.Orca Repair removes colorsIn multicolor (painted) models the color is stored as separate information on every triangle of the mesh. When Windows’ 3D repair service rebuilds the mesh, that per-triangle data cannot be carried over and the colors are lost.3MF loads only geometryA 3MF file can carry slicer settings next to the model, but it does not have to. If the settings do not load, the file either contains none or is in a format the slicer cannot read.
Frequently asked questions
Why won’t my 3MF file open in Orca?
The most common causes: values that are “auto” in Bambu (0 and -1) but invalid in Orca, a file without settings, or a file in another slicer’s format. The pages below explain each error and how to fix it.