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Ultimaker / Cura

3D printer / slicing GUI built on top of the Uranium framework
GNU Lesser General Public License v3.0
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Lightning Infill produces incorrect results when "Infill Support" is checked #19285

Open Nogibator99 opened 3 days ago

Nogibator99 commented 3 days ago

Cura Version

5.7.2

Operating System

Mac OS 13.3.1

Printer

Anycubic Kobra 2

Reproduction steps

  1. Set "Infill Pattern" to some value other than "Lightning"
  2. Check the "Infill Support" box
  3. Set "Infill Pattern" to "Lightning"
  4. Observe that the "Infill Support" box is not visible anymore, which probably makes sense, since "Lightning" infill mode takes care of supports
  5. Slice

Actual results

Some parts of the infill are hanging in the air

Expected results

The result should not depend on the invisible checkbox

Add your .zip and screenshots here ⬇️

Hanging infill: https://github.com/Ultimaker/Cura/assets/13188098/349f65b6-6302-4f18-812b-fc9f0112c78c

Normal infill: https://github.com/Ultimaker/Cura/assets/13188098/3a3e1142-4d6e-4e37-a6f6-57110bdbd925

GregValiant commented 3 days ago

Thanks for the report. We ask for Project Files because they are necessary for an investigation. I made up a spherical model but I cannot duplicate the problem. Please post a project file.

Nogibator99 commented 3 days ago

Thanks for getting back! Sure, here it is. Bro.3mf.zip

The problem gets more apparent when you look at the infill closer to the top of the model. You can set infill density to 10 to make the effect more clear.

Attaching a video that can hopefully convey what I'm doing. https://github.com/Ultimaker/Cura/assets/13188098/62faffa2-b0c3-4e11-b342-19d0675029d4

GregValiant commented 3 days ago

This is your project with Infill Density at 10% and "Infill Support" was turned on before switching to "Lightning" infill. Those vertical gaps should not be there and are a 100% failure problem. image

That might be why Infill Support was disabled for Lightning but even though the setting is hidden, it still seems to be having an effect. This reminds me of what was happening with some other settings in the Support section. The settings were being hidden due to the values of other settings, but they were still having an effect.

@HellAholic and the Cura team will take a look.
GV_19285.zip

This is the same preview but with Support Infill turned off. image

Nogibator99 commented 3 days ago

Yes, this is precisely what's going on. That's great, thanks a lot for your effort, really appreciate it!

HellAholic commented 3 days ago

@GregValiant thanks for the heads-up. Added a ticket for investigation. There are cases of settings being sent to the engine while not visible/disabled on the front-end, this is also one of them indeed.

Internal reference: CURA-11991