[Union overlapping volumes problem in cura]

Some pictures to illustrate.

intersecting cube test v1.stl

[Union overlapping volumes problem in cura]

Sorry, I'm not the original poster. I've been using Fusion 360, but get the same problem.

 

I.e. If I have two intersecting bodies in Fusion 360, and then export that component as an STL, Cura cuts the intersecting section out.

 

If this is not broken functionality, then I think I must be misunderstanding something. However I feel like the support article on this makes it pretty clear: https://support.ultimaker.com/hc/en-us/articles/360012614159-Mesh-fixes-settings

 

Quote

If a model contains two volumes that interfere (as if they were placed through each other), this setting allows you to fix that. Union overlapping volumes will recognize these interferences and try to slice it as one volume.

 

This is then followed by a diagram. To be clear, when I have "Union overlapping volumes" enabled, what I see is the image in the diagram captioned "Union overlapping volumes disabled".

 

If I am in fact misunderstanding how this setting is supposed to work, please let me know.

[Union overlapping volumes problem in cura]

On 3/14/2020 at 10:31 PM, IRobertI said:

I'm confused. If you know that your STL is broken (which it is), why not fix the model rather than trying to use Cura to work around it?

 

But for what it's worth, both MS 3D Builder and the Cura plugin "Mesh Tools" could fix at least "sample.stl" which I tested.

 

When you say 'broken', do you mean because it has two volumes that are overlapping?

 

If so, isn't "Union Overlapping Volumes" supposed to address this exact problem? I'm also having this problem where "Union Overlapping Volumes" actually cuts the intersection out entirely, instead of unioning them.