[Strange patterns within print using Concentric infill]

Hi, can anyone help explain why I have those weird infill pattern within my print as shown in the picture attached.

I am trying to print a circular disc with a combination of a "line" infill pattern at the center and a concentric infill pattern away from the center. I use Ultimaker cura 4.13.1 and I am concerned about those inconsistent patterns within the print.

 

Thanks

[Ultimaker Cura 5.1.0 skips infills when printing with a different infill layer thickness]

@GregValiant, thank you for the explanation. You communicated the issue just exactly the way I would have done. I hope they solve this bug as soon as possible.

 

@gr5, Thanks for your response. I have attached the gcode file produced from 5.1.0 to this post. 

Circular concave disc.gcode

[Ultimaker Cura 5.1.0 skips infills when printing with a different infill layer thickness]

Hello, I don't think the feature works, because I tried printing with the settings above (different infill layer thickness) and I had prints on empty layers below (just like the image I uploaded above). I tired increasing the infill percentage from 100% to 110% then 150% and down to 90% and the print time were similar with no change. This informs my decision that there could be an issue somewhere. 

Note: This is only applicable for concentric infill as "lines infill" had no issues with this settings.

 

I did a quick check on previous version 4.13.1 and there were no issues.
Could you please help me on this.

[Ultimaker Cura 5.1.0 skips infills when printing with a different infill layer thickness]

Okay, thanks. I would try it out and observe the outcome.

[Ultimaker Cura 5.1.0 skips infills when printing with a different infill layer thickness]

Hello, I noticed whenever I set a different infill layer thickness in cura with a concentric infill, cura tends to skip printing infill at lower layers and then start printing infill on empty spaces above areas that ought to have infill. Please kindly suggest what to do.

Note: I am printing layer height of 0.1 mm with an infill layer thickness of 0.3 mm

 

Thanks

[Printing more than two materials in Ultimaker 3]

Hello, Is it possible to print using three materials (2.85 mm) or more with Ultimaker 3? I would like to print PLA of two different colors and PVA without manually pausing the print and changing filament. Is there any technique for this?. Also does the Ultimaker material station work for ultimaker 3 ?, because I know it supports the S5.