How to Open 3MF Files in UltiMaker Cura
UltiMaker Cura is a free slicer used with UltiMaker printers and hundreds of other FDM machines.
Short answer · Built in
Yes. UltiMaker Cura opens 3MF files as shipped: File › Open File(s)… (Ctrl+O).
Import 3MF into UltiMaker Cura, step by step
- 1Check the fileA 3MF is a zipped package that can contain several objects, colours and print settings; don't unzip it before importing.
- 2Import into UltiMaker CuraFile › Open File(s)… (Ctrl+O).
- 3Check scale and orientationUltiMaker Cura works in millimetres and is Z-up. 3MF files are millimetres, stored in the file, so they normally arrive at the right size.
- 4Place it and sliceLay the flattest face on the plate, confirm the dimensions in the object panel, and slice. Slicers ignore textures and animation.
What comes through
| Shape | Yes, always. |
| Colours and materials | Ignored: UltiMaker Cura only uses the shape. |
| Textures | Not used by a slicer. |
| Animation | UltiMaker Cura doesn't play animation. |
Things to watch for
- Cura 3MF projects can also carry print settings.
- Use the Lay flat or Select face to align to build plate tool before slicing awkward shapes.
Questions
- Does UltiMaker Cura support 3MF files?
- Yes. UltiMaker Cura opens 3MF files as shipped: File › Open File(s)… (Ctrl+O).
- Why is my 3MF model the wrong size in UltiMaker Cura?
- 3MF files are millimetres, stored in the file, while UltiMaker Cura works in millimetres. Scale the model after importing, then apply the scale before you continue.
- What is the best 3D format for UltiMaker Cura?
- 3MF and STL are the most reliable choice for UltiMaker Cura. 3MF is one of them, so you're already using a good option.
Menu names follow UltiMaker's current release. Check the official UltiMaker Cura documentation if your version differs.
Written with AI assistance by the Renderlyst team in October 2026. Format support reflects each app's current release as we understand it, and we link the official documentation so you can confirm it for your version. Spotted something out of date? Email alishbakhalid766@gmail.com.