Bridge flow being applied to ENTIRE LAYER when thick bridges are selected! #1857

New Issue

MrUnknownDE · 2026-04-05T20:36:06+02:00

MrUnknownDE commented

2026-04-05 20:36:06 +02:00

Originally created by @jefftopp1984 on 10/22/2025

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.3.1

Operating System (OS)

Windows

OS Version

Win11

Additional system information

Not really relevant but 12th Gen i7 and 64GB RAM, integrated graphics

Printer

CR-6 SE

How to reproduce

Use 0.1mm layers and select thick bridges. Even though the slicer preview shows the correct flow, it is not in the g-code file. It has been causing EXTREME over-extrusion above the bridge layers because it tries to print the flow of 0.2-0.3mm layers in a 0.1mm Z Gap. It then snowballs and creates a nasty bulge around 0.5-0.75mm thick protruding from the actual perimeters. I have to lower my flow manually of those perimeters to 71% or lower to prevent the over-extrusion. Prusa and SuperSlicer are ALSO affected by this so this is in the CORE SLICING LOGIC!

Actual results

Horrific over-extrusion above bridge layers in the perimeters.

Expected results

Normal walls

Project file & Debug log uploads

Not Applicable. It shows in the resulting print unless you can see the flow is too much based on the E moves in the G-Code.

Checklist of files to include

Log file
Project file

Anything else?

No response

*Originally created by @jefftopp1984 on 10/22/2025* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.3.1 ### Operating System (OS) Windows ### OS Version Win11 ### Additional system information Not really relevant but 12th Gen i7 and 64GB RAM, integrated graphics ### Printer CR-6 SE ### How to reproduce Use 0.1mm layers and select thick bridges. Even though the slicer preview shows the correct flow, it is not in the g-code file. It has been causing EXTREME over-extrusion above the bridge layers because it tries to print the flow of 0.2-0.3mm layers in a 0.1mm Z Gap. It then snowballs and creates a nasty bulge around 0.5-0.75mm thick protruding from the actual perimeters. I have to lower my flow manually of those perimeters to 71% or lower to prevent the over-extrusion. Prusa and SuperSlicer are ALSO affected by this so this is in the CORE SLICING LOGIC! ### Actual results Horrific over-extrusion above bridge layers in the perimeters. ### Expected results Normal walls ### Project file & Debug log uploads Not Applicable. It shows in the resulting print unless you can see the flow is too much based on the E moves in the G-Code. ### Checklist of files to include - [ ] Log file - [ ] Project file ### Anything else? _No response_

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Reference: github/OrcaSlicer#1857