Not sure if it's a Cura or Fusion issue - part of design in Fusion is not moved over to Cura when selecting to print 3D

[BMWFan 1]

I've attached 2 screenshots. One from Fusion, the other from Cura. In Fusion I made the shown item. I select the entire object (all 3 bodies) and tell fusion to print 3D in Cura (which has never failed me before). But in Cura, the center circle in the polygon shape (bottom image with red circle) at the base is not included in Cura (only supports seen inside). Anyone seen this before? I suspect it might be a Fusion issue, but thought someone may have run across this and know what the fix is.

Thanks.

Edited January 18 by BMWFan

[Slashee_the_Cow 541]

If you could share your Cura project file (.3mf, get it set up then go to File > Save Project) and the original model file (the STL or whatever you exported out of Fusion) we can have a look at them. When it comes to stuff like this, pictures usually aren't enough to go by.

[BMWFan 1]

Here are the files attached.
I'm a super-novice at Fusion, so I'm sure it's a problem on my part.
Laughing at what I did is OK, and I'll take any tips on how to use Fusion better.

Sheep for Piano v3.3mf Sheep for Piano v3.stl Paino Sheep.3mf

Edited January 18 by BMWFan

[Slashee_the_Cow 541]

Well I don't know how to use Fusion at all, so you can laugh at that if you want 😆

The problem seems that when you export it as a 3mf, it's exporting the three objects (main part, tube in base and muzzle) as three separate objects and Cura isn't putting them back together in the same place as they are in Fusion:

STLs can technically only hold one object (which doesn't stop people making files with multiple objects in them, but that's beside the point) so Fusion combines the three so they're a single object and it imports into Cura together:

I'm guessing if Fusion let you specify the positions of multiple objects in a .3mf file it would export them as you see them in the first place (for all I know there could be a setting or something though). So you can either use the STL or combine the three objects into one in Fusion (which would probably eliminate the missing faces in the muzzle) and then an export as .3mf would probably work.

 

FWIW: If the filename didn't say "sheep" I would guess "pig". You better be gluing some cotton wool to that thing when you're done. My second guess would have been "Diglett":

[BMWFan 1]

I wonder if there was just some buggy thing that happens during the "3D Print" in Fusion that makes that circle not show up. Because, when I instead use the Exported .stl that I made in Fusion, the circle is there. That is odd. I'm sure there's some explanation from someone who knows Fusion, but I'll just chalk that up as I didn't troubleshoot enough.

I'll just use the exported .stl instead of 3D printing directly from Fusion to Cura without the export step taken.

[GregValiant 1,454]

We never laugh at other people's problems.  Giggle behind our hands - you betcha.  Laugh out loud - never happens...honest 🤞

 

Parts have to be properly "Unioned" (merged) in order to export as an STL or as Slashee says, you will only get one part.

So the problem might be that there are separate entities rather than a single entity.

 

There should be "0.00000000" gap between pieces for a proper "Union".  I don't know if Fusion has "Assembly Constraints" but in other AutoDesk software (Inventor/Mechanical Desktop) that is what would be used to positively locate one piece to another.

 

Zooming in, I see that this piece (the mouth?) is not designed correctly.  It's showing the polka-dot pattern that indicates problems.  That needs to be addressed in Fusion.  Then the parts should all be assembled and merged prior to export.

 

[Slashee_the_Cow 541]

9 hours ago, GregValiant said:

Parts have to be properly "Unioned" (merged) in order to export as an STL or as Slashee says, you will only get one part.

That's... sort of the opposite of what I said. It seems to do an implicit union when exporting as STL, which is why the STL is fine. When exporting as 3mf it keeps each object separate and doesn't maintain their positions. So you need to union it if you're going to export as 3mf.

[DivingDuck 105]

On 1/18/2025 at 6:17 AM, BMWFan said:

I'm a super-novice at Fusion, so I'm sure it's a problem on my part.
Laughing at what I did is OK, and I'll take any tips on how to use Fusion better.

 

This is usually a user knowledge problem with Fusion. There are more than one way to generate the mesh.

 

Right click the top of your project:

Then in the next windows choose export, STL binary and refinement High:

Import the exported stl file in Cura:

 

Now you have all bodies as one body.

Exporting it as 3mf file will give you a set of bodies if you choose one file as structure. This is what your problem was.

Select a dedicated body if you want to print only a part of the fusion design with more than one body.

 

Keep in mind there are different ways to print a project or part of a project. An other way is to print directly via -->Utilities --> Make and then Preparation type: Print utility

 

 

The last way is over Manufacturing: -->Utilities --> Make and then Preparation type: Manufacturing.

 

Check all possible settings for more experience.

 

Further help in Fusion:

 

https://help.autodesk.com/view/fusion360/ENU/?guid=SLD-3D-PRINT

 

 

 

[BMWFan 1]

Thanks for the tips. It did print OK when I Exported and put that in Cura instead of printing right from Fusion to Cura.
I'll put the help into the memory banks and hope to retain it for next time.
Learning little bits with each design.

Thanks.