Thinning/ Bed Adhesion and Warping Issue on Left Side of Print Bed

Bambu Lab P Series Troubleshooting
1

I’ve been having issues when printing anything on the left side of my printer, first layer is not sticking well at all. I’ve noticed that the first layer on the left side appears much more thin than normal, and the lines don’t fully blend together leading to gaps in between the lines. Then, the ASA will warp starting on the left edge of the print bed, no matter the part orientation. This renders the left side of my printer useless, and I’ve been forced to print everything on the right side of my printer. I realize the aux fan is the one thing that’s only on the left side of the printer, but it is off in the slicer. The printer has nearly 9000 hours on it and is excellent otherwise. I’ve cleaned the bed and with and without glue, the issue is unchanged. I’ve confirmed that the bed temp is same as right side via IR thermometer. Tried different ASA brands. I’m out of troubleshooting ideas.

Below is picture of a mouse ears, left ear is from the left side of the build plate, the right is from the right side of the build plate (I scooted them closer together for easier comparison). The gaps in the lines on the left I believe are leading to my bed adhesion/warping issue.

0 - Copy
0 - Copy298×242 43.2 KB

Filament is dry and I’ve confirmed the aux fan is off. Please advise.

P1S converted from P1P
Generic ASA Print Settings with 100C bed temp
Bambu Textured PEI Sheet
Overture Black ASA & Creality Black ASA

Thanks in advance!

2

First and foremost - if you slice the same model and print with either PETG or PLA, what happens?

3

The gap in the lines are still present with PLA.

4

Did you try the other side of the PEI plate to see if maybe its an issue with the textured PEI surface? Maybe try lightly sanding the plate to?

Also, I’ve seen reports of some cabling/screws being loose in the toolhead causing a similar issue here on the forum, so might try opening it up and confirming everything is seated well.

You didn’t mention how many hours of printing you have on that plate, so if neither of those work, it may just be time for a new plate?

5

that doesn’t look like a filament issue to me. That looks like a bed level issue. Because one mouse ear is good and the other is nozzle too far from build plate. You could try doing a manual bed tramming and check the real levelness the bed is to the nozzle tip. The beds come calibrated from the factory and the auto bed leveling can only compensate so much. 9000 hours is a long time. Sometimes the build trey can need manually calibrated.