Improvement to gap filling in the works?

[CCS86]

Hi guys,

I have struggled with inconsistent gap filling in Cura for a long time. I'm wondering is any improvement is in the works for 4.8 and beyond?

Here is a comparison between Cura and Slic3r.

Slic3r: Difference between identical layers is minimal. Perimeters minimize gaps. Gap filling is concise.

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Cura w/ gap filling: Significant difference between paths on identical layers. Gap filling is sporadic. With tiny gaps filtered out, relatively large gaps are left.

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Cura w/ gap filling w/ filter out tiny gaps: Similar to above, but with relatively large gaps left. On this print, filtering tiny gaps reduces estimated print time by 28%

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Compensate wall overlaps definitely increases the ragged path appearance. But without it on a print like this, Cura generates enough wall overlap to cause over extrusion issues.

[rburema]

Yes, though very likely not in 4.8

You can check some of the progress towards variable line width, which (we have good reason to believe) will be a huge help with overfill/underfill (as well as a host of other things) here: Ultimaker/CuraEngine#1210

[Ghostkeeper]

An improvement was implemented with Ultimaker/CuraEngine#1210.