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Support interface not honoring XY distance resulting in interface with no support under it #8933

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tlhintoq opened this issue Mar 17, 2025 · 7 comments · May be fixed by #8987
Open
3 tasks done

Support interface not honoring XY distance resulting in interface with no support under it #8933

tlhintoq opened this issue Mar 17, 2025 · 7 comments · May be fixed by #8987
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bug Something isn't working

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@tlhintoq
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Is there an existing issue for this problem?

  • I have searched the existing issues

OrcaSlicer Version

2.3.0-RC

Operating System (OS)

Windows

OS Version

10x64

Additional system information

High end machine per all my other earlier posts

Printer

Elegoo giga

How to reproduce

With a model that might have support needs closer than the XY offset
Turn on supports.

Actual results

Image

The supports stop because they honor the 1mm distance from the model.
But the interface still tries to print even though there is no support under it.

Expected results

If there's no support, don't try to print interface in mid air

Project file & Debug log uploads

x

Checklist of files to include

  • Log file
  • Project file

Anything else?

x
@tlhintoq tlhintoq added the bug Something isn't working label Mar 17, 2025
@hotellonely
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oh, so it was indeed a bug not just some bad luck i got

@Noisyfox
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Noisyfox commented Mar 17, 2025 •
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Could you provide a 3mf that could reproduce this issue? In my test this seems to be working fine

Image

@tlhintoq
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My example was from a large job done on an Elegoo Giga with a 1.0mm nozzle.
I think this, like a lot of the support issues, become more obvious when the jobs are larger.

Image

Thighs.giga.orca (2).zip

@tlhintoq
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oh, so it was indeed a bug not just some bad luck i got

Are you saying this happened to you as well? I've suppled @Noisyfox with a .3mf project that produces this. Maybe you could share yours as well? That would give her a couple different projects to maybe find a common cause.

@Noisyfox
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Noisyfox commented Mar 21, 2025 •
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I've located the issue, however I couldn't find an easy solution. One of the issue is the support area is too small that, when generating extrusion paths, in one direction it fits but when rotated 90 degrees it won't. The support body and interface have a 90 degree angle difference, that's why only the interface is generated but not the body.

One possible solution is to add a "gap-fill" to the thin areas if normal support extrusions could not be generated.

Noisyfox added a commit to Noisyfox/OrcaSlicer that referenced this issue Mar 21, 2025
@Noisyfox
Fix missing support body if it's too small (SoftFever#8933)
7b87d2b
@Noisyfox Noisyfox linked a pull request Mar 21, 2025 that will close this issue
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@tlhintoq
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@Noisyfox

The support body and interface have a 90 degree angle difference,

So if the user were to ensure the support and interface settings are at the same angle this shouldn't happen?
Is that something the user even has the ability to control?

@Noisyfox
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No you couldn't change them individually. And this is just one factor of the problem.

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Fix missing support body if it's too small Noisyfox/OrcaSlicer
3 participants
@Noisyfox @hotellonely @tlhintoq