How to Open STL Files in Bambu Studio
Bambu Studio is Bambu Lab's slicer for its X1, P1 and A1 printers, and it opens models through File › Import.
Short answer · Built in
Yes. Bambu Studio opens STL files as shipped: File › Import › Import 3MF/STL/STEP/SVG/OBJ/AMF (Ctrl+I).
Import STL into Bambu Studio, step by step
- 1Check the fileFind out what units the part was designed in. Almost every printable STL is in millimetres, but the file itself doesn't say.
- 2Import into Bambu StudioFile › Import › Import 3MF/STL/STEP/SVG/OBJ/AMF (Ctrl+I).
- 3Check scale and orientationBambu Studio works in millimetres and is Z-up. STL files are unitless (slicers assume millimetres), so the size depends on what the exporter assumed.
- 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: Bambu Studio only uses the shape. |
| Textures | Not used by a slicer. |
| Animation | Bambu Studio doesn't play animation. |
Things to watch for
- STL is read as millimetres, which is what almost every printable STL uses.
- Use Lay on Face (F) to put the flattest side on the plate before slicing.
Questions
- Does Bambu Studio support STL files?
- Yes. Bambu Studio opens STL files as shipped: File › Import › Import 3MF/STL/STEP/SVG/OBJ/AMF (Ctrl+I).
- Why is my STL model the wrong size in Bambu Studio?
- STL files are unitless (slicers assume millimetres), while Bambu Studio works in millimetres. If a model imports tiny, Bambu Studio offers to convert from inches or metres; accept it or scale by 1000% in the object panel.
- What is the best 3D format for Bambu Studio?
- 3MF and STL are the most reliable choice for Bambu Studio. STL is one of them, so you're already using a good option.
Menu names follow Bambu Lab's current release. Check the official Bambu Studio 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 Spotted something out of date?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.