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supermerill / SuperSlicer

G-code generator for 3D printers (Prusa, Voron, Creality, etc.)
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Overhangs undetected #4045

Open supermerill opened 6 months ago

supermerill commented 6 months ago

What happened?

Some thin "bridges" in the middle of the part are not detected as overhangs image

Project file & How to reproduce

v0_Straight_Cartridge.3mf.zip

Version

2.5.59.3

Operating system

windows 10

Printer model

No response

Nyshan commented 6 months ago

This seems to be "fixed" to some degree in the latest version of PrusaSlicer: image v0_Straight_CartridgePS.zip

supermerill commented 6 months ago

it's also not a problem in PS2.5

supermerill commented 4 months ago

Is the issue still here in the latest nightly? Seems like it's resolved.

edit: yes note: to reproduce, increase the overhangs to 0.4

supermerill commented 4 months ago

understood the issue: There is something under the bridge to support it in theory, but it's too thin to be printed.... Problem is, I can't know if & when this lower layer has a perimeter or not. I'll have to grab all settings used by the previous layer to try to compute the minimum width it can handle... (if it has thin walls activated, then there is something) I'll do it in the 2.7, as this area already see numerous changes.

Nyshan commented 4 months ago

understood the issue:

There is something under the bridge to support it in theory, but it's too thin to be printed....

Problem is, I can't know if & when this lower layer has a perimeter or not.

I'll have to grab all settings used by the previous layer to try to compute the minimum width it can handle...

(if it has thin walls activated, then there is something)

I'll do it in the 2.7, as this area already see numerous changes.

Haha, I couldn't have hoped to have described the problem as eloquently as you've done here. I agree that this is likely what is happening.