Just read this, maybe it will be easier to understand: The question is whether it exports solid or hollow. At the end of the day, both variants have a surface, of course, but it’s about the filling, polygons, triangles, and resolution.
“Due to the nature of meshes, they don’t contain what we would consider in Mastercam a true “edge”. Mesh models can be either manifold or non-manifold just like a solid. A mesh can be used as machining geometry, but they are generally best suited for organic shapes rather than geometric shapes. This is especially true when a geometric shape contains circular data, as meshes are not capable of creating clean circles.”
@RetroSharky it looks like you are mostly referring to the export process to Blender. I am speaking about the export process to get files printed in Bambu Studio from Fusion 360. Attached below are images of the issue. Uploading: Screenshot 2026-02-22 141100.png…
That’s exactly the problem. Because you didn’t set the settings correctly and, as I wrote in my other comment, you should use the other export function. That’s 100% your problem, the wrong export path. You can only use this if you know exactly what the sliders do, otherwise you have to use the other one.
I suspect that the object is also incorrectly grouped for this export, but that’s just a guess.
Try this and let us know if the problem has been resolved.
And on one image, he also says that the 3D object is too small, which again makes it clear that it was exported incorrectly because the sizes are no longer correct.
It says right in that article that “Meshes are also used for 3D printing since their file type, .STL, is used by 3D printers.” It doesn’t matter how you create a STL or 3MF file, they’re still hollow meshes. I understand the difference between a solid and a surface mesh, don’t need that hammered at me. The slicer doesn’t care about the solid insides, only the surface.
Anyway this is how Autodesk themselves recommend exporting for 3D printing. It works and I’m not going to argue about it.
Yes, it’s from Fusion 360. Unfortunately, I only have the German version, but the export function is the same. It may just be that it looks darker because of Dark Mode.
No, that’s completely wrong, and before you get hung up on something, please read up on the topic.
There are more than enough topics here in the forum, on the internet, and on YouTube. You don’t have to believe me, but you can’t question fundamental knowledge in 3D modeling that has been valid for decades.
I’m completely baffled by your responses. STL can only represent a surface mesh. You keep sending me links saying the same thing. I fully understand the difference of a mesh format like STL vs. a solid model format like STEP, and never questioned that. (I might be new to 3D printing but I’ve been modelling for quite some time, going back to the early AutoCAD versions.) The slicer works on surface meshes, otherwise it would require a different format like STEP (when you import a STEP into the slicer it converts it to a mesh). I’m literally looking at the code for it. But yes, I will educate myself more before further engaging on this topic.
I cant help much here but, I choose the Export method,
Top left “File” beside the floppy save icon.
Scroll down to export
I am not sure your problem with the lines disappearing have to do with how you are saving your file. More likely how your getting the Text on you model. For example If I try to emboss “-.001” it wont show up in Studio. but if I increase to -.005 it will show.
I’m not doing this to annoy you. I’m not concerned with who is right or wrong, but that the quality is not accidentally degraded because it is exported incorrectly.
Interestingly, you even mention it:
Exactly, you basically decide whether to do the conversion in advance in Fusion 360, which unfortunately isn’t exactly known for doing a good job of mesh conversion (although this is often due to incorrect settings), or you leave it to the professional: the slicer.
“STEP format is a kind of standard exchange format that is widely used in CAD software. Almost all CAD software can export models or assemblies expressed in STEP format. That means models in assembly can be combined and expressed easily in STEP files without accuracy loss.”
“The STEP file saves models without accuracy loss. The original STEP file is the vector model, when importing the STEP file, Bambu Studio converts models into triangular mesh automatically according to a tolerance thatis small than the half of default arc fitting tolerance. That is, it is converted into a high-precision STL model in Bambu Studio. Therefore, more outline details of the model can be reserved, so that more G2/G3 arc move G-code can be generated when slicing.”
Edit: There is an extremely interesting thread on this topic. The user Olias did an outstanding job of summarizing this at the time, better than I ever could.
Try extruding the letters into the main object by just 0.01mm — it’s so small it won’t affect the actual print at all, but it gives Bambu Studio just enough of an edge difference to work with when you use the ‘Identify Edges’ painting tool. Bring it into Bambu Studio, paint away, and you’re good to go!
There really “shouldn’t” be a need to paint anything in Studio. The example I showed in your other thread, about text, showed how a filament color can just be applied to the whole text part of the overall object, w/out any painting. The depth (thickness) of the text part body would determine how far into the main body the text filament color penetrates (when color is painted-on, that depth is controlled in the Strength settings → paint penetration layers).
The text part should be positioned below the main body “part” in the slicer’s object tree (the parts can be dragged around to re-order 'em).
Correct. While it SHOULDN’T be necessary, it really does make painting text easy. I’ve played with Fusion a bunch trying to get flush text to work right and this was by far the most reliable for me. I don’t do much text in Bambu Studio anymore since I have a laser engraver, but I do use it for paining on Fuzzy Skin in the same way. I was using this technique for a bit and then I saw FunctionPrintFriday (YouTube channel) do the same thing and it confirmed to me that it was a viable way to paint text/other features easily.
Oh, if you use STEP and all your bodies are in one Fusion Component (or no component, just at the top level of the project like you have), then after import into Studio you have to r-click on the single imported object in Studio and select Split → To parts in the menu (same as with STL files that have multiple bodies). Then you get separate parts for each body you had in Fusion. And apply filament color to the whole text part instead of painting, as I was suggesting earlier.
If you use separate Components in Fusion then those automatically import as separate parts in Studio. Though of course each could still have multiple bodies.
