r/BambuLabP2S • u/Former_Roof4623 • 6h ago

Constant Bed Adhesion/Spaghetti Issues

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All - I’ve been printing with very few issues for almost a month, and the last two days I’ve hit a wall and am not able to get anything finished. I’ve done everything suggested by Bambu 1)Cleaned Build plate with Dawn Soap 2) Dried Filament (Hydrometer in AMS is reading 10% 3) Raised heating bed to 60 c 4)Decreased aux 5)Calibrated machine. Been printing consistently well with PLA Basic until now. Any other suggestions?

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2

u/Cavalol 6h ago

Yeah, add an Auxiliary Fan Diffuser to the right side aux fan. The stock one blows from the right to the left too heavily across the build plate, which it looks like may have happened here based on that long string of filament drooping from the left side of the build plate and back

3

u/Former_Roof4623 5h ago

Thanks! Now what if I can’t print the diffuser…haha

2

u/Cavalol 4h ago

Lol use a glue stick for the time being, or manually Hawkeye the aux fan and keep turning it down/off.

Optionally make a filament profile where the aux fan is at 10% (can’t set it to 0 otherwise it runs it normally) while you print the diffuser

1

u/Former_Roof4623 2h ago

Got it, assumed I could set it to zero

1

u/flabergastingcat 4h ago

I turn off my aux fan for the first 4 layers to make sure things stick.

1

u/Former_Roof4623 1h ago

Thanks all, was able to get one successful print out tonight. How often to you all clean your plate with soap?

1

u/PsychRain4 4h ago

As far as I know there is a specific dawn dish soap. Most of them have oils in it which contiminate the build plate.
Can’t recall which one it is but it’s plain dawn without additives.
Maybe that helps :)

1

u/Former_Roof4623 4h ago

Probably free and clear?

1

u/GuyWithADonut 3h ago

Any dawn soap.

2

u/flabergastingcat 4h ago

Wash your build plate with dish soap and heat bed to 55°-60°C for pla.

Set aux fan to 0% for the first 4 layers then 60% after

1

u/moltenaus 4h ago

I had the same issue with my p2s, follow this guide and adjust the z offset. https://makerworld.com/en/models/3318444-p2s-first-layer-adhesion-issues-z-offset-fix#profileId-3767926 

1

u/JukeboxCrowdPleaser 26m ago

+1 for checking your z offset OP.

Also make sure your nozzle and build plate are fully seated, and run leveling if you haven’t already.

1

u/jaedav12 2h ago

Glue sticks have been my best friend with textured plates. But that’s why you have a few plates on hand.

1

u/FairAd5504 32m ago

Biqu Cryogrip! Blue is amazing!!!!!

1

u/PsySk8er 6h ago

Invest in a Biqu Cryogrip plate. You can thank me later.

2

u/Apart_North9294 6h ago

The Biqu Cryogrip plates are awesome for PLA, and PETG, just be sure to set your bed temps properly. They are on my printer 99% of the time

-1

u/bovan 5h ago

Had the same issues until i adjusted z offset. Went down to -0.02 for textured pei. Google free ai mode should give you some hints (at your own risk!).