Small perimeters not working when model loaded as 3mf #1412

New Issue

MrUnknownDE · 2026-04-05T17:38:05+02:00

MrUnknownDE commented

2026-04-05 17:38:05 +02:00

Originally created by @MikeOxlong83 on 12/5/2025

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.3.1β

Operating System (OS)

macOS

OS Version

Sequoia 15.7.2

Additional system information

iMac 27" Late 2013
3.5 GHz Quad-Core Intel Core i7
NVIDIA GeForce GTX 775M 2GB
24GB 1600MHz DDR3
OpenCore Patched to run newer versions of the OS that Apple arbitrarily decided not to support despite the hardware being fully capable of running the software.

Printer

BambuLab X1C Combo

How to reproduce

Load in a model
Save it as a 3mf
Close orcaslicer
Open the 3mf or open orcaslicer and select the project from the "recently opened"
Go to speed tab
hover cursor over small perimeters
take note at the end of the tooltip it says to use 0 for auto
set it to 0
notice the error generated bottom right saying 0 isn't in the accepted range

Actual results

I wouldn't trust the generated gcode file to print acceptably

Expected results

The model slices with no prefixing errors

Project file & Debug log uploads

github orcaslicer error.3mf.zip

Checklist of files to include

Log file
Project file

Anything else?

No response

*Originally created by @MikeOxlong83 on 12/5/2025* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.3.1β ### Operating System (OS) macOS ### OS Version Sequoia 15.7.2 ### Additional system information iMac 27" Late 2013 3.5 GHz Quad-Core Intel Core i7 NVIDIA GeForce GTX 775M 2GB 24GB 1600MHz DDR3 OpenCore Patched to run newer versions of the OS that Apple arbitrarily decided not to support despite the hardware being fully capable of running the software. ### Printer BambuLab X1C Combo ### How to reproduce Load in a model Save it as a 3mf Close orcaslicer Open the 3mf or open orcaslicer and select the project from the "recently opened" Go to speed tab hover cursor over small perimeters take note at the end of the tooltip it says to use 0 for auto set it to 0 notice the error generated bottom right saying 0 isn't in the accepted range ![Image](https://github.com/user-attachments/assets/22112586-3d90-4f5f-9ee9-cb78738fc14d) ![Image](https://github.com/user-attachments/assets/d5db709d-cc33-4246-916a-5ffc080a1ed0) ### Actual results I wouldn't trust the generated gcode file to print acceptably ### Expected results The model slices with no prefixing errors ### Project file & Debug log uploads [github orcaslicer error.3mf.zip](https://github.com/user-attachments/files/23964744/github.orcaslicer.error.3mf.zip) ### Checklist of files to include - [ ] Log file - [x] Project file ### Anything else? _No response_

MrUnknownDE closed this issue

2026-04-05 17:38:05 +02:00

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Reference: github/OrcaSlicer#1412