Kobra 3 Exclusion Zone values are misinterpreted to include the entire bed area. #2391

New Issue

MrUnknownDE · 2026-04-06T05:51:33+02:00

MrUnknownDE commented

2026-04-06 05:51:33 +02:00

Originally created by @tolistim on 8/23/2025

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.3.1 Alpha - Aug 23, 2025

Operating System (OS)

Linux

OS Version

Mint 22.1

Additional system information

CPU: AMD Epyc 7402
GPU: NVIDIA RTX A5000
RAM: 256GB ECC

Using both the default values in the Anycubic Kobra 3 presets or copying and pasting from my settings in 2.3.0, the alpha applied the exclusion zone to the entire bed area. This results in any placed object reporting that it's too close to the exclusion area.

My exclusion values are: 0x0, 2x0, 2x255, 0x255, 0x255, 255x255, 255x252, 0x252, 255x255, 252x255, 252x0, 255x0, 0x0, 0x2, 255x2, 255x0

Printer

Anycubi Kobra 3 0.4 mm Nozzle

How to reproduce

1: Open a new project
2: Note the print bed surface image is all gray
3: Add an object

Actual results

Entire bed is excluded

Expected results

Only the edges of the bed should be excluded

Project file & Debug log uploads

debug_Sat_Aug_23_12_16_53_2.log.0.log

Anycubic Kobra 3 0.4 nozzle - Red.json

Checklist of files to include

Log file
Project file

Anything else?

No response

*Originally created by @tolistim on 8/23/2025* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.3.1 Alpha - Aug 23, 2025 ### Operating System (OS) Linux ### OS Version Mint 22.1 ### Additional system information CPU: AMD Epyc 7402 GPU: NVIDIA RTX A5000 RAM: 256GB ECC Using both the default values in the Anycubic Kobra 3 presets or copying and pasting from my settings in 2.3.0, the alpha applied the exclusion zone to the entire bed area. This results in any placed object reporting that it's too close to the exclusion area. My exclusion values are: 0x0, 2x0, 2x255, 0x255, 0x255, 255x255, 255x252, 0x252, 255x255, 252x255, 252x0, 255x0, 0x0, 0x2, 255x2, 255x0 <img width="862" height="170" alt="Image" src="https://github.com/user-attachments/assets/a62a3462-d2fb-4557-afeb-fc1c5beb6ddd" /> ### Printer Anycubi Kobra 3 0.4 mm Nozzle ### How to reproduce 1: Open a new project 2: Note the print bed surface image is all gray 3: Add an object <img width="924" height="858" alt="Image" src="https://github.com/user-attachments/assets/19f9a3c2-d676-49e7-a74e-1e2b118b73cb" /> ### Actual results Entire bed is excluded ### Expected results Only the edges of the bed should be excluded ### Project file & Debug log uploads [debug_Sat_Aug_23_12_16_53_2.log.0.log](https://github.com/user-attachments/files/21950640/debug_Sat_Aug_23_12_16_53_2.log.0.log) [Anycubic Kobra 3 0.4 nozzle - Red.json](https://github.com/user-attachments/files/21950644/Anycubic.Kobra.3.0.4.nozzle.-.Red.json) ### Checklist of files to include - [x] Log file - [ ] Project file ### Anything else? _No response_

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Reference: github/OrcaSlicer#2391