Bridges fail due to automatically generated internal solid infill #1438

New Issue

MrUnknownDE · 2026-04-05T17:46:24+02:00

MrUnknownDE commented

2026-04-05 17:46:24 +02:00

Originally created by @grossmaj on 12/2/2025

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.3.1

Operating System (OS)

Linux

OS Version

Debian 12

Additional system information

No response

Printer

Creality K1C

How to reproduce

Download the Creality K1 / K1C Unibody Riser Hexagon Plates STL from:
https://www.printables.com/model/913077-creality-k1-k1c-unibody-riser-hexagon-plates/files
Open it in Orca Slicer 2.3.1 or newer.
Place the model with the hexagon side facing down.
Slice and print it.

Actual results

The bridges on the lower and upper parts of the print fail. The slicer preview shows internal solid infill in these areas.

Expected results

Orca Slicer 2.3.0 does not generate this internal solid infill and produces beautiful bridges.

Project file & Debug log uploads

Unibody_Riser_Plate_Hexagon_Left.zip

Checklist of files to include

Log file
Project file

Anything else?

No response

*Originally created by @grossmaj on 12/2/2025* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.3.1 ### Operating System (OS) Linux ### OS Version Debian 12 ### Additional system information _No response_ ### Printer Creality K1C ### How to reproduce 1. Download the Creality K1 / K1C Unibody Riser Hexagon Plates STL from: https://www.printables.com/model/913077-creality-k1-k1c-unibody-riser-hexagon-plates/files 2. Open it in Orca Slicer 2.3.1 or newer. 3. Place the model with the hexagon side facing down. 4. Slice and print it. ### Actual results The bridges on the lower and upper parts of the print fail. The slicer preview shows internal solid infill in these areas. ![Image](https://github.com/user-attachments/assets/a357752d-c707-493a-b043-f1ab3fce090d) <img width="557" height="768" alt="Image" src="https://github.com/user-attachments/assets/84480842-2429-46ab-8477-2043997d5e7f" /> ### Expected results Orca Slicer 2.3.0 does not generate this internal solid infill and produces beautiful bridges. ![Image](https://github.com/user-attachments/assets/742a6f89-579f-4ae5-90f4-93d1230bc0f2) <img width="600" height="865" alt="Image" src="https://github.com/user-attachments/assets/45f96b41-cf48-4ffb-a28a-a22399a7bc66" /> ### Project file & Debug log uploads [Unibody_Riser_Plate_Hexagon_Left.zip](https://github.com/user-attachments/files/23892713/Unibody_Riser_Plate_Hexagon_Left.zip) ### Checklist of files to include - [ ] Log file - [x] Project file ### Anything else? _No response_

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Reference: github/OrcaSlicer#1438