Not recognizing solid geometry #2163

New Issue

MrUnknownDE · 2026-04-06T00:49:37+02:00

MrUnknownDE commented

2026-04-06 00:49:37 +02:00

Originally created by @GaymerCat on 9/17/2025

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.3.1-Beta

Operating System (OS)

Windows

OS Version

Windows 11 Home

Additional system information

Graphics Card: NVIDIA GeForce RTX 3060 Laptop GPU

Printer

Bambu Lab A1

How to reproduce

Load an object with small geometry
click "slice plate"

Actual results

In this example, the star in the center is supposed to have infill and a bottom/top surface. As seen in the pictures below, Orca only detects the walls of the star and does not make a bottom/top surface. I say bottom/top surface because it happens on both sides of the coin. The 3rd picture is the file printed with "detect thin walls" turned on and slightly altered elephant foot settings.

Showing the model and how there is no hole in the center

Preview showing a hole in the center

Showing the file prints with a hole in the center

Expected results

I expected the star to have infill or at least a bottom/top surface. Below is a picture of a print of the same file printed last year using OrcaSlicer. I believe the version was 2.3.0 but can't confirm.

Project file & Debug log uploads

moon_coin_problem.zip

Checklist of files to include

Log file
Project file

Anything else?

No response

*Originally created by @GaymerCat on 9/17/2025* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.3.1-Beta ### Operating System (OS) Windows ### OS Version Windows 11 Home ### Additional system information Graphics Card: NVIDIA GeForce RTX 3060 Laptop GPU ### Printer Bambu Lab A1 ### How to reproduce 1. Load an object with small geometry 2. click "slice plate" ### Actual results In this example, the star in the center is supposed to have infill and a bottom/top surface. As seen in the pictures below, Orca only detects the walls of the star and does not make a bottom/top surface. I say bottom/top surface because it happens on both sides of the coin. The 3rd picture is the file printed with "detect thin walls" turned on and slightly altered elephant foot settings. <img width="1920" height="1020" alt="Image" src="https://github.com/user-attachments/assets/54880402-71cd-4b35-8b53-5f2add44701e" /> Showing the model and how there is no hole in the center <img width="1920" height="1020" alt="Image" src="https://github.com/user-attachments/assets/1ddf8d55-4a1f-4f19-9109-b5eaa0e4fae0" /> Preview showing a hole in the center ![Image](https://github.com/user-attachments/assets/94136e44-ae85-473e-b421-b24065a31879) Showing the file prints with a hole in the center ### Expected results I expected the star to have infill or at least a bottom/top surface. Below is a picture of a print of the same file printed last year using OrcaSlicer. I believe the version was 2.3.0 but can't confirm. ![Image](https://github.com/user-attachments/assets/bd9ef90e-8bb2-49a2-979d-796e5670c944) ### Project file & Debug log uploads [moon_coin_problem.zip](https://github.com/user-attachments/files/22377586/moon_coin_problem.zip) ### Checklist of files to include - [ ] Log file - [x] Project file ### Anything else? _No response_

MrUnknownDE closed this issue

2026-04-06 00:49:37 +02:00

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Reference: github/OrcaSlicer#2163