P1S Help Layer Peeling Bed Adhesion

Bambu Lab P1 Series Troubleshooting
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P1S 1150 hours Bambu Matte PLA Bambu Translucent Petg, .4mm Nozzle Default Filament Settings Bambu Slicer software firmware up to date.

Need some help, p1s 1150 hrs
Cleaned Plate (dish soap, alcohol)
Replaced the Hot end Assembly x2
Disassembled and Inspected the extruder (clean)
All tubing is secure
Powered on and off the printer
Restarted the slicer and computer running it.

Using Bambuu filament and settings Bambu PLA Matt, Bambu Petg Translucent and Esun Basic all with variations like the above

Room is kept below 40% humidity at around 70 farenheit.
Running all calibrations Calibration (second time)
Software and Firmware is up to date
Been troubleshooting this for 5 hours and at a total loss

What am I missing?

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If I had to guess, it looks like a clogged nozzle. Your printer is underextruding.

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Have you tried increasing the nozzle temperature temporarily—say, above 260°C—and letting it heat soak for about five minutes? Then use the slicer or control panel to extrude filament until it flows smoothly.

1 Like
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Hi Olias, Thank you
Just tried that got it coming out clean, and tried another benchy started the print but filament was not extruding at all…

Second try and it was a very string benchy
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Try it with a really good scrub of dish soap (with a brush) and hot water. Don’t use alcohol.

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Hi Jon, Thank you
I have done that, with alcohol and with out dish soap no moisturizer :frowning:

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How are you drying your filament? Also be sure that the correct bed is selected in Bambu studio as the P series doesn’t check to make sure it is the right one.

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Hi, I am not drying it but my print room is climate controlled and never gets above 40% and the filament I am printing with has been unsealed in the room for over a month? I doubt that is causing the problem, do you really think it is. All the filament companies are pushing those dryers but…

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Then on to my second guess. You may have something in your extruder that is interfering with the feed. You’ll have to disassemble it to be sure.

Here’s a Wiki with video on how to do that if you’ve never done it before.

https://wiki.bambulab.com/en/x1/troubleshooting/extruder-clog

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Hi Olias, that is what I thought, I did take it apart and everything looked good

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Quick update
Did a factory reset
One print with uneven filament being printed.
Then did a cold pull and now there is no filament coming out

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If you’ve already done a cold pull, you’re quickly running out of options before needing to consider replacing components.

One last thing to check is the PTFE path. Here’s a quick test: remove the existing PTFE tube entirely and replace it with a short temporary one. Cut a 1-meter length of filament and feed it directly into the toolhead using a 100mm section of PTFE tubing. This bypasses the full tube path and isolates the last possible point of failure affecting extrusion. If that works, they replace the entire PTFE tube path. I’m assuming you already checked that but it’s the last thing I can think of.

If that still doesn’t work, I’d strongly consider replacing the extruder gear assembly first, followed by the nozzle assembly.

  1. Hardened Steel Extruder Gear Assembly | Bambu Lab USA Store
  2. Bambu Hotend - P1 Series | Bambu Lab USA Store

BTW: The upgrade bundle includes both components if you want to just take the plunge:

It’s not a bad idea to have spares of these two components on hand anyway as they are items that are subject to wear and eventually you will need to replace them anyway.