Hello, I had a 3D model created using Hunyuan, and it displays the colors. Now I want to import the model with the colors into Bambu Studio, for example as an OBJ file, but it doesn’t ask me for the .mtl file and only loads it in Single Color.
Is there a way to import multi-colored 3D models other than the 3MF file from Bambu Lab? A converter from GLB or OBJ to 3MF doesn’t work, unfortunately.
The screenshot shows which formats I can download.
yeah but as i said, this will only import the object and not the color settings 
so the model is only single color
This one here as example, the first one is the OBJ, but Bambu dont want to read the .mtl
Does it still only import as basic geometry ?
yes. I download the whole file as a zip from huanyan and extract it. after that i have the files as you can see and in bambu studio i import the .obj and it dont want to read the.mtl for the color informations
AMF (Additive Manufacturing File) is a file format used primarily for 3D printing, designed to store detailed information about 3D objects, including geometry, color, and material properties.
An MTL file, or Material Template Library file, is a plain text file used in 3D modeling to define material properties and textures for 3D objects, typically in conjunction with OBJ files.
Could it be an unsupported file type ?
I don’t know the answer to that, unfortunately, but it works for others, although those are usually files from MakerWorld. My main point is that I prefer Huanyan’s 3.1 model to MakerLab’s 3.0. The advantage of MakerLab is that I can insert multiple images, but I’ve only ever downloaded the STL file, which is only a single color. The advantage of MakerLab is that I get the model as a 3MF file, even though it’s the same AI model from Huanyan. So it must be possible to load the multi-color model directly from Huanyan into Bambu Studio. 
and yes is saw this video and thread but the video is not so good
also need to look for Texture to vertex color using Geometry Nodes | Blender because io cant find it for now.
As you probably know, when exporting an OBJ file, one has actually three files for the color model. They are .OBJ (The mesh), .MTL (The material definition) and finally .PNG which is the color map that overlays the mesh. Apparently Bambu does not support that.
From web search, does bambu studio support mtl files ?
If im understanding that correctly it requires a mapping file to add colour, which is seperate from the main files
Yes.
PNG is not used as that is about texture, not color, which Studio doesn’t care about. The .mtl file format is very simple, just a material name and color (and potential texture image name). Then that name gets used inside the .obj file in usemtl commands, alongside all the coordinates. It’s all plain text.
Sorry, I don’t know why this particular import isn’t working. Maybe you could post some files for others to test (anything with this issue, eg. from Hunyuan, not necessarily what you want to print).
-Max
Yes, sure, can I send this file here as well? Unfortunately, it doesn’t work with any of the models I download from Hunyuan as OBJ files. Perhaps someone else could test it on Hunyuan themselves.
You should be able to attach the zip file here… I’d hope! Maybe a smaller model if the files come out too large (not sure what the limit on the forum is).
-Max
sadly theres no way to upload a .zip file here maybe you can try by yourself and download the model as .OBJ
https://3d.hunyuanglobal.com/login?redirect_url=https%3A%2F%2F3d.hunyuanglobal.com%2F
You could just change the file’s extension to one of the supported file types here, like .3mf (which is actually a zip archive also). Or add .3mf to the name (eg. name.zip.3mf) which is an old trick to keep the original extension more obvious. File extension filters are silly.
Looks like the service needs an account to use it plus I’m not keen on giving their AI access to my browser… sorry.
-Max
I don’t understand the question, sorry. I think 'Olli was talking about the Hunyaun site/service directly, not the version used via MW.
-Max
ok Thank you! I will try that
so i will ask again, which one is the .mtl that bambu studio supports
Portable Network Graphics
PNG stands for Portable Network Graphics, a type of raster image file. It was developed as an improved, non-patented replacement for GIF and supports various image types, including palette-based images, grayscale images, and full-color images. PNG files use lossless compression, making them popular among web designers for their ability to handle graphics with transparent or semi-transparent backgrounds.
You can’t load the .mtl file directly. Normally you load the .obj file, and when you do that, it asks you for the .mtl file and opens the file explorer. At least that’s how it’s always worked for me.
