OrcaSlicer 3D file formats: what opens and how
OrcaSlicer is a free, open-source slicer forked from Bambu Studio that supports printers from many brands. It opens 3 of the 9 common 3D formats below without conversion; for the rest, convert to STL first.
Format support at a glance
| Format | Support | How |
|---|---|---|
| GLB | Convert first | Convert to STL |
| glTF | Convert first | Convert to STL |
| OBJ | Built in | File › Import (Ctrl+I) |
| STL | Built in | File › Import › Import 3MF/STL/STEP/SVG/OBJ/AMF (Ctrl+I) |
| FBX | Convert first | Convert to STL |
| PLY | Convert first | Convert to STL |
| 3MF | Built in | File › Import (Ctrl+I), or open it as a project |
| DAE | Convert first | Convert to STL |
| USDZ | Convert first | Convert to STL |
Which format to choose
3MF and STL are the most dependable choice for OrcaSlicer. 3MF projects keep plates, colours and print settings. OrcaSlicer is a slicer, so it only needs the shape: colour and textures are dropped, and anything it can't open converts cleanly to STL.
Units and orientation
OrcaSlicer works in millimetres and is Z-up. Most problems after an import, such as a model that is invisible, enormous or lying on its side, come from a mismatch with the exporting app rather than a broken file.
- Run the built-in calibration prints (flow, pressure advance, temperature) once per filament; they matter more than model tweaks.
- Right-click an object › Fix model if the slicer warns about open edges.
Questions
- What 3D formats can OrcaSlicer open?
- Without conversion: OBJ, STL, 3MF.
- How do I get an unsupported format into OrcaSlicer?
- Convert it to STL with one of our in-browser converters, then import the STL. In OrcaSlicer: File › Import › Import 3MF/STL/STEP/SVG/OBJ/AMF (Ctrl+I).
- Does OrcaSlicer keep textures and animation?
- OrcaSlicer only uses geometry. Textures, materials and animation are ignored, so a plain STL or 3MF is all you need.
Source: the official OrcaSlicer documentation. Menu names can move between versions.
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 Spotted something out of date?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.