Under extrusion on some shells wall lines

[brickZA 0]

Hi,

It seems like Cura 2.5 (I have not checked other versions) is slicing in under-extrusion on some walls, see the transition circled in red in the image:

layer view

By the way, Cura 2.5's layer view is awesome for showing this :)I saw gaps between the walls on my actual print, which is what made me investigate. What I see in my physically printed object matches the layer view pretty well, i.e. the wall lines that appear solidy connected in the layer view also seem solid in the print, and th ones that look underextruded in the layer view have gaps.

I wanted to attach my cura project, but it seems that the forum does not allow this, but I cannot really imagine what I could have done to cause this ;)The model is from this thing: http://www.thingiverse.com/thing:1784375

[brickZA 0]

I have confirmed that the under-extrusion is a slicer issue by also slicing the same model with slic3r 1.2.9. With slic3r the walls are solid with no gaps visible.

Should I make a bug report, or have I done something silly?

Thanks

Neilen

[smartavionics 288]

Hi, turning off the "Compensate Wall Overlaps" setting appears to fix this issue.

[smartavionics 288]

Playing with this some more, it appears that scaling the model changes the behaviour. Some lines that are thinned on one layer become their normal size when the model is scaled up but other lines (on any layer) can then become thin.

[smartavionics 288]

Just discovered that this is already a known issue:

https://github.com/Ultimaker/Cura/issues/1692

[brickZA 0]

Just discovered that this is already a known issue:

https://github.com/Ultimaker/Cura/issues/1692

Aah, thanks for finding it, I guess my work is done for now