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extra perimeter on overhangs starts in the air #9480

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2 tasks done
SphaeroX opened this issue Feb 1, 2023 · 2 comments
Closed
2 tasks done

extra perimeter on overhangs starts in the air #9480

SphaeroX opened this issue Feb 1, 2023 · 2 comments
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2.6.0-alpha2 Overhangs

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@SphaeroX
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SphaeroX commented Feb 1, 2023

Description of the bug

The print starts here in the air, if it would start properly at the print part then one could print very well in the air like for example with ArcOverhangs

Neues-Projekt

Project file & How to reproduce

09_support.zip

Open with 2.6 Alpha

Checklist of files included above

  • Project file
  • Screenshot

Version of PrusaSlicer

Version 2.6.0-alpha2+win64

Operating system

Win 11

Printer model

custom
@kubispe1
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kubispe1 commented Feb 2, 2023

Thanks for your issue. We are working on fix.

bubnikv pushed a commit that referenced this issue Feb 3, 2023
@Godrak
\#9480 Fix weird path connections in Extra Perimeters when gap fill i…
06e602a 
…s applied

\#9513 \#9489 Fix crash when brim is used - the expansion of very small drops may result in empty polygon, which the support spot generator did not reflect
Fix crashes of stability alert checker, when empty print object was passed to it
@Godrak
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Godrak commented Feb 16, 2023

We have fixed the issue where the extra perimeter connected on a wrong spot to the previous perimeter and then the pattern broke. This could happen especially when there is a single extrusion line gap fill as last extrusion, as in your example. The extrusions should also not break in the air as happened in your example.

However, as for the extrusions starting in the air, this can still happen, and it is usually signal that you should enable supports. The extra perimeters feature is not supposed to allow printing of big overhangs without supports. It reduces the amount of supports needed (with supports autopaint tool), tries to avoid unanchored bridges in the air and improves the surface quality.

@Godrak Godrak closed this as completed Feb 16, 2023
@kubispe1 kubispe1 mentioned this issue Feb 24, 2023
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2.6.0-alpha2 Overhangs
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@SphaeroX @Godrak @kubispe1