Odd/unnecessary "Internal bridge infill" layer/section - Githubissues

supermerill / SuperSlicer

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

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Odd/unnecessary "Internal bridge infill" layer/section #2715

Open TommyC81 opened 2 years ago

TommyC81 commented 2 years ago

What happened?

Sliced object, found an unnecessary "Internal bridge infill" layer/section. When printed, it was causing excessive over extrusion.

The layer below is solid infill, so there should be no reason to print a "supporting" layer.

Project file & How to reproduce

Check layer 7 in the attached project file.

Project file: EasterEggHolder.zip

Generated gcode: EasterEggHolder_2h1m_0.2mm_210C_PLA_CR6SE.gcode.zip

Version

nightly_dev (e941089c075efbdbf7f36959f868ce2b5ee4c633)

Operating system

Windows 10

Printer model

Creality CR6 with Sherpa Mini direct drive

supermerill commented 2 years ago

But if it doesn't add the supporting surface, a little solid infill on top may drop a full layer, and create a jam by curling.

This one doesn't need to be printed in some very specific cases:

If the layer height is low (less than two times the bridge flow section)?
if the bridge flow is too high vs the current layer height (and so it overextrudes a lot)

I guess I can try to add these hidden safeguards.