bolsoncerrado wrote: ↑Mon Feb 06, 2023 7:50 am
Here's the "offending" file...
Hmm... 2 shells with 0 distance? This looks like something they've introduced with 4.1.1...
Got this from support on May, 24th 2019:
"We've documented this so that we can track the behavior with models imported with coplanar surfaces. As this is not technically a valid mesh, it's behavior is usually not considered, since the slicing engine expects a valid mesh. I would strongly recommend taking steps to make sure that your models are a single, manifold model on exporting from your CAM software. "
I sometimes imported assemblies from CAD with seperate bodies touching each other (not intersecting), starting from 4.1.1 the models had to be merged into a single body.
But to be fair here - it is tricky. PS doesn't handle this completely flawless in all cases:
It does slice in your case because you likely have the default setting for slicing gap radius set
to something > 0.
Using defaults does work:
...but only because PS is now completely ignoring the "zero space" gap between your parts where two parts end.
I often include very tiny cuts to geometry to speed things up/use vase mode, without reducing the slicing
gap radius (same for Cura) those slicers will handle a flawless file wrong and increase print times immensely.
As always, depends on what you need and how clean your model files are.