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prusa3d / PrusaSlicer

G-code generator for 3D printers (RepRap, Makerbot, Ultimaker etc.)
https://www.prusa3d.com/prusaslicer/
GNU Affero General Public License v3.0
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Organic supports that start in mid-air #13195

Closed funkyduck77 closed 1 week ago

funkyduck77 commented 1 month ago

Description of the bug

I am currently struggling with a rather strange problem. I have a model sliced with PrusaSlicer (Ver 2.8.0+win64) and when I want to use organic props, they sometimes start in the air. What could be the reason for this?

Supports start from layer 7... support_mid_air1

...and become more the more layers are added. support_mid_air2

Even rotating or repositioning the model did not change anything.

Project file & How to reproduce

Body_sign.zip

Checklist of files included above

Version of PrusaSlicer

2.8.0+win64

Operating system

Windows 11

Printer model

Prusa MK3.5 & MMU3

funkyduck77 commented 1 month ago

After a few tests, the error does not seem to exist if you use ‘Automatic painting’ in the support. support_mid_air3 support_mid_air4

The only problem is that this support is not satisfactory for the project.

chmuc01 commented 1 month ago

I have the same problem, Slicer 2.8 on MacOS, but this problem is not OS dependant. It seems that if the organic support trees are not high (in my case only 6mm) then the 'inner' branches of the trees begin in the air, meaning that support is generated from 0.6 to 1.2 mm above the initial layer. This means there is no way that these supports can be printed correctly and the result is a failed print and a lot of material detached. See attached file for an example. OrganicSupportError.3mf.zip

Jan-Soustruznik commented 1 week ago

Hello, Thank you for your report. Same problem is already reported. I closed issue as duplicate of https://github.com/prusa3d/PrusaSlicer/issues/9601