Top few layers bulging out over profile with orca slicer

Any ideas why this top layer issue is happening? A dramatic overhang that ive tried to solve in many ways but failed? Layers in slicer show normal evenness at the top layers. Ive tried pretty much everything up to my skill level.

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Hi, that looks odd. Is the model supposed to have straight vertical walls? Looks like they have a slight curve to them?

Im wondering if the model is cooling odd causing the walls to bulge meaning the top layer is offset. The head is printing in the right place but the layer below has moved due to shrinkage??

Just a thought…

T


hanks for the input. yes the wall is STRAIGHT not a curve what so ever, i triple checked. I will look into cooling further.

What filament did you use?

Before you do anything. Have you performed the recommended maintenance to ensure that the printhead head and filament are moving smoothly? Bambu Lab P1 series printer Maintenance Recommendation | Bambu Lab Wiki

Second, have you tried to manually calibrate the filament you’re using rather than relying on the inherently “unrealizable” factory defaults.

I’m seeing a lot of evidence that the filament is poorly tuned.

Thanks for taking a look at my post and responding. The tool head was bent from crashing into the poop shoot slightly. I replaced that and it printed better but still with the overhang on the top. Ironing is not on. When i (out of desperation) printed the object in bambu instead of orca, the model printed out quite well, with no overhang. Been using it ever since. Wish we could do a save ALL settings to a document. Its so many to export. with extrusion and filament ext

The problem is back. Well, never really went away. I’m going to try filament flow calibration. It’s a printed line break test, apparently. Thats what bambu support directed me to do. Im running straight Black Elegoo PLA. Millions of rolls sold, so its probably not issue, unless my printer flow is off in some other way.