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Bottom interface layer is not generated , support on build plate only. (long open defect) #4199

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kursatu opened this issue May 5, 2020 · 4 comments
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Bottom interface layer is not generated , support on build plate only. (long open defect) #4199

kursatu opened this issue May 5, 2020 · 4 comments
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awaiting response supports

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@kursatu
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kursatu commented May 5, 2020 •
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Version

2.2.0
This has been around for few years , as far as I can remember.
There are other reports of the same defect dating 2 years or so.
It greatly diminishes the value of multi-material printing.
Here is my model which has the missing bottom interfaces marked with red.
The top interface layer is generated and printed fine.
There could be a setting for enabling/disabling bottom interface layers.
This could be more useful.

To reproduce

  • Select support on build plate only
  • Slice something that requires bottom & top support interface layers.

If you select, supports everywhere, then it is generated.

Here is the thread in the forum.
https://forum.prusaprinters.org/forum/original-prusa-i3-mmu2s-mmu2-general-discussion-announcements-and-releases/bottom-interface-layer-is-not-generated-long-open-defect/#post-212771
Bottom interface
Top interface
@kursatu kursatu changed the title Bottom interface layer is not generated (long open defect) Bottom interface layer is not generated , support on build plate only. (long open defect) May 5, 2020
@bubnikv
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bubnikv commented Feb 24, 2021

Please provide a 3MF to test with.

@bubnikv
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bubnikv commented Mar 18, 2021

No data provided, however I suppose the issue will be solved by trimming the support columns with the object silhouette. In that regard it is a duplicate of #915 #1340

@bubnikv bubnikv mentioned this issue Mar 18, 2021
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bubnikv added a commit that referenced this issue Mar 19, 2021
@bubnikv
Refactoring of FDM support generator:
9f09f03 
1) If "support on build plate only" is enabled, the support columns are
   newly trimmed to not land on top of an object. However this may make
   the column too small to be stable.
2) Support enforcers newly take precedence over "supports on build plate only"
   and over "don't support bridges".
3) Some refactoring of the support generator code for clarity: Reduced
   some of the worst spagetti offenders.

Fixes Support generated even if support on build only activated #915
Fixes Bug: supports on build plate only #1340
Fixes Bottom interface layer is not generated , support on build plate only. (long open defect) #4199
Fixes option "supports on build plate only" does not work #3980

Fixes No support interface layers generated #1997
Fixes Feature Request: Option to combine results of 'support from build plate only' and 'support enforcers only' #2801
Fixes Support interface isn't generated: build plate only + blocked by model + support enforcer #3831
Fixes Support Enforcer don't create interface layers #5748
Fixes Support Enforcers Don't Have Top Loops/Raft #1870
Fixes Don't cancel support enforcers with "don't support bridges" #5105
@bubnikv
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bubnikv commented Mar 19, 2021

Fixed with 9f09f03

@bubnikv bubnikv closed this as completed Mar 19, 2021
@bubnikv
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bubnikv commented Mar 22, 2021

Fixed with 9f09f03

@bubnikv bubnikv mentioned this issue Aug 6, 2021
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