Random deretractions (E.00001) with Arachne engine #8455
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Thanks. It seems to be a very short segment, so short that after rounding, the x and y position is the same as the previous move, which is then interpreted as a deretraction by GCodeProcessor. We will look into it. |
hejllukas
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Jul 14, 2022
…rouping ExtrusionPaths with the same extrusion width in thick_polyline_to_extrusion_paths() that was affecting Arachne and gap fill. The previous behavior didn't merge two ExtrusionPaths with the same extrusion width, and it also could merge two ExtrusionPaths with different widths, which was unintentional, and it could also possibly create visible artifacts in some cases. Because simplification of ExtrusionLoop in GCode::extrude_loop is working on ExtrusionPath and not on whole ExtrusionLoop, so previous incorrect behavior was preventing simplification and removing small extrusions like in #8455.
hejllukas
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Jul 14, 2022
… removing vertices between collinear and nearly collinear lines.
This was referenced Jul 15, 2022
Godrak
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that referenced
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Jul 29, 2022
…rouping ExtrusionPaths with the same extrusion width in thick_polyline_to_extrusion_paths() that was affecting Arachne and gap fill. The previous behavior didn't merge two ExtrusionPaths with the same extrusion width, and it also could merge two ExtrusionPaths with different widths, which was unintentional, and it could also possibly create visible artifacts in some cases. Because simplification of ExtrusionLoop in GCode::extrude_loop is working on ExtrusionPath and not on whole ExtrusionLoop, so previous incorrect behavior was preventing simplification and removing small extrusions like in #8455.
Godrak
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Jul 29, 2022
… removing vertices between collinear and nearly collinear lines.
supermerill
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to supermerill/SuperSlicer
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Jul 30, 2022
…evented removing vertices between collinear and nearly collinear lines.
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Description of the bug
Some models seem to have random deretractions when sliced with arachne engine in 2.5.0-alpha2. When sliced with classic perimeter generator these micro extrusions do not happen.
retractions seem to happen correctly, but for some reason there are derectractions on the long walls
upon further inspection, it seems that the slicer tries to compensate extrusion with
E.00001?Project file & How to reproduce
3dpnfilholdguidev2-2.zip
Checklist of files included above
Version of PrusaSlicer
2.5.0-alpha2
Operating system
Windows11
Printer model
prusa mini
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