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Loaded the "cartridge_holder.stl" file into Cura from here:
Enabled "Break up support into chunks".
Set "Support Wall Line Count" to 1.
Sliced model.
Took screenshot.
Disabled setting.
Sliced model.
Took screenshot.
Enabled setting.
Set Wall Line count to 0
Sliced model.
Took Screenshot
Screenshot(s)
20mm "Chunks enabled", 1 support wall line
Inside of supports
2mm "Chunks enabled", 1 support wall line
No chunks enabled, 1 support wall line
20mm "Chunks enabled", 0 support wall line
Actual results
Wall lines are going around the entire support instead of the chunk, rendering this setting mostly useless. I've even attempted going down to a 2mm chunk size with no difference.
While my memory could be terrible, I remember that this used to work (even on this model) but no longer seems to function.
Expected results
Wall lines are added around each chunk, keeping them as separate chunks but with their own walls.
I don't think this ever worked. This is how it looks in Cura 3.4, when Support Wall Line Count got introduced:
Break Up Support In Chunks got introduced in Cura 3.0 and Support Wall Line Count in 3.4, so we certainly didn't take Support Wall Line Count into account when implementing that, since it didn't exist yet. The way that Break Up Support In Chunks works is by leaving out some of the "zags" of the zig-zag pattern. So it never really broke up the support area into multiple parts and thus wouldn't break up the surrounding wall line either.
We've discussed this, but decided that the implementation of making the extra support wall follow the broken up chunks is too complex. We've instead given the setting a warning if Break Up Support In Chunks is enabled. It's not a real fix, but hopefully that makes it a bit more clear that the two don't combine well. I'll also mention it in the Settings Guide I think.
Application version
4.6.1
Platform
Windows 10 64 Bit
Printer
Anycubic i3 Mega
Reproduction steps
Screenshot(s)
20mm "Chunks enabled", 1 support wall line
Inside of supports
2mm "Chunks enabled", 1 support wall line
No chunks enabled, 1 support wall line
20mm "Chunks enabled", 0 support wall line
Actual results
Wall lines are going around the entire support instead of the chunk, rendering this setting mostly useless. I've even attempted going down to a 2mm chunk size with no difference.
While my memory could be terrible, I remember that this used to work (even on this model) but no longer seems to function.
Expected results
Wall lines are added around each chunk, keeping them as separate chunks but with their own walls.
Project file
https://we.tl/t-mJW9xfQV0I
Log file
cura.log.txt
Additional information
(Extra information relevant to the issue.)
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