3MF opens without settings: only geometry loads
A 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.
Why does it happen?
- The file was exported as a model only (it contains no settings file).
- The file is in another slicer’s format (for example PrusaSlicer); Orca does not read these settings as project settings.
- The file is sliced output (.gcode.3mf); the project itself may not be inside.
- The file was prepared for a different printer, and the slicer offered to import only the geometry instead of loading the settings.
How to fix it
- Drop the file onto the converter: the report says whether the file has project settings and which printer it was prepared for.
- If there are no settings, open the model in Orca with your printer profile and choose the quality settings yourself.
- If there are settings and the target printer is different, the converter writes the machine settings from the target printer’s profile; quality settings are kept.
Frequently asked questions
Does the converter also convert files without settings?
The model geometry is converted and the report notes “no project settings”; you choose the settings on the target printer.
Which files contain settings?
A 3MF is a ZIP file; files that contain “project_settings.config” are in the Orca/Bambu project format.