Wrong Bridge Direction, printing a bridge on air

[Orel-A]

Bambu Studio Version

1.9.2 Public Official

Where is the application from?

Bambu Lab github releases

OS version

Windows 11

Additional system information

No response

Printer

Creality Ender-3 V3 KE

How to reproduce

Bridge direction in settings is left on 0 as default. A project file is provided.

Actual results

The project file has 4 bridges, 2 are correct and 2 are in wrong direction, printing on air.

Expected results

The expected results is to bridge from solid print.

Project file & Debug log uploads

GPU support jack (2).zip

Checklist of files to include

• [ ] Log file
• [X] Project file

[QingZhangBambu]

@XunZhangBambu check this please

[XunZhangBambu]

@Orel-A I have found the root cause of the bug, will fix it later

[NicolasBadey]

I confirm this behavior on new version, half or our products is no more printable due to this, do you have a release date @XunZhangBambu for the fix ?

It's like bridge event at "0" direction aren't smart now and follow always the same direction and yes, print in void (no more to the optimal automatic direction deduce from geometric).

Thanks ^^

[ScrapyCocos]

I have the same issue. I'm currently printing a 90 degree part and one side where the slicer needed to print a bridge, the bridge it's printed in mid air and along the length of the design instead a proper bridge between two walls.

[NicolasBadey]

It's like on previous version "direction = 0" was not typed (0 = false), and now it's typed so 0 is now "0 degree" and there is no alternative way to said "direction = auto".

This problem is critical as some pieces are not able to be print with BambuLab Slicer since

[magnusmyklebost]

Any fix on this? I got two parts where the bridge is on the same height. But it still makes the right side bridge very long. I dont understand why it wants to print 4x the length bridges, but I found out it could be overwritten by using 180 degree bridge direction instead of 0 degree.

[Orel-A]

It's not actually 0 degrees, because in this case 0 means Automatic.

[magnusmyklebost]

yea, that whas what i ment by "overwritten" even though 180 degrees should be the same direction as 0 (there is also a hint about this when you hover over the setting).

[XunZhangBambu]

@magnusmyklebost Hi,could you provide the 3MF. We have been working internally to fix the issue. In @Orel-A 3mf, the fixed auto bridge direction is However, there is a small gap at its corner.We are still optimizing this solution.

[XunZhangBambu]

@magnusmyklebost @ScrapyCocos Could please provide the 3mf ? I need these 3MF files to verify if the fix is effective.