Cura 4.2.1, are filling holes ?!?!?

[pmleite 0]

got some strange slicing with cura

(see photo gallery)

when I slice this project some holes are random filled by the height that I have defined to walls .

??? help please... 

note that if I rotate the model, other holes are filled???!! 

very strange 

 

[burtoogle 495]

I expect the model has a problem. Please attach it to this thread. Thanks.

[pmleite 0]

Here they are..
Got the same problem with this tow models, just in cura, for example, in repetier with cura slice engine it slices ok

led_panel.stl led_panel_frame.stl

Edited August 16, 2019 by pmleite

[pmleite 0]

4 hours ago, burtoogle said:

I expect the model has a problem. Please attach it to this thread. Thanks.

 

led_panel.stl led_panel_frame.stl

[burtoogle 495]

Thanks for the models. I was wrong, the models are OK. However, I can slice led_panel.stl and it looks OK. It must, instead, be a problem with the settings. Please save the project file and attach to this thread. Thanks.

[pmleite 0]

3 hours ago, burtoogle said:

Thanks for the models. I was wrong, the models are OK. However, I can slice led_panel.stl and it looks OK. It must, instead, be a problem with the settings. Please save the project file and attach to this thread. Thanks.

Here it is..
I don't see nothing unusual... but we never know! 

led_panel.3mf

[burtoogle 495]

Thanks for the project file. Hmm, very weird, It looks to me that those sections are being inverted, i.e. the hole is treated as solid and gets skin and the non-hole area which should be skin is empty (if you turn off the fill gaps between walls setting).

 

At this time, I can't say where the bug is. Possibly in the front end but it looks more likely to be in the slicer back end.

 

Interestingly, when I sliced the led_panel.stl using different settings there wasn't a problem so I will continue to investigate.

[pmleite 0]

1 hour ago, burtoogle said:

Thanks for the project file. Hmm, very weird, It looks to me that those sections are being inverted, i.e. the hole is treated as solid and gets skin and the non-hole area which should be skin is empty (if you turn off the fill gaps between walls setting).

 

At this time, I can't say where the bug is. Possibly in the front end but it looks more likely to be in the slicer back end.

 

Interestingly, when I sliced the led_panel.stl using different settings there wasn't a problem so I will continue to investigate.

You are the best!,  meanwhile I am printing this model in repetier, with cura engine, there I do not have this issue.  When you got the bug we will hear about! advance thanks!

[burtoogle 495]

Hi, it's definitely a bug in the current Cura. I have taken the liberty of creating an issue (https://github.com/Ultimaker/Cura/issues/6215).

 

In the meantime, a workaround that worked for me was to change the top/bottom line width slightly. i.e 3.9 or 4.1 instead of 4.0.

 

[burtoogle 495]

BTW, you can save yourself some time and filament by switching to gyroid infill at a much lower density than what you are currently using. It will still be stupidly strong. I also recommend enabling the optimise wall printing order setting.

[pmleite 0]

1 hour ago, burtoogle said:

BTW, you can save yourself some time and filament by switching to gyroid infill at a much lower density than what you are currently using. It will still be stupidly strong. I also recommend enabling the optimise wall printing order setting.

LOL, I think the project that I send to you was 50% fill.. I never do that, I loaded the model and made slice with default values, I always use between 15% and 25%..

And yes, gyroid infill make difference, tanks for the tip, I have adjusted the line width to 0,39 and works fine for me! 

In future releases they should solve this problem... 

Best regards and thanks for all...

[burtoogle 495]

2 hours ago, pmleite said:

In future releases they should solve this problem... 

 

Indeed they should. Let's hope they treat it with the priority it deserves!

[JonathanFV 0]

Hi! Just wanted to say, this is still an issue for me, with version 4.4.0 on Linux. I double checked my model using Slic3r, and it worked fine. The model is a 12mm wide box with a star shaped hole from the top that doesn't go through completely and leaves 2mm thickness at the bottom.

[jackaruto 0]

Hey I don't know if you are still having this issue, but I recently made a model on blender and was having a similar problem with gaps in the modeled being filled by Cura. I had to recalculate all of the mesh normals to face outside and it fixed the issue. So maybe make sure your normals are facing the right way? Hope that helps.

 

Best Regards