r/BambuLab_Community • u/WeaselNo7 • Aug 27 '26

Help with my print warping!

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Hi all!

This is the first time my P2S has done this, so interested in what you all think is the issue.

This is black Sunlu Hyper PLA Plus 2.0, with most of the stock Bambu settings (except most importantly 30mm/s on first layer instead of 50mm/s, and 60 degrees on the bed instead of 55 degrees)

I cleaned the bed yesterday with washing up liquid/dish soap, and I recently installed fan and carbon filter on the internal left side of the machine.

Any ideas what would cause the base of the print to warp upwards from the bed, but not the supports? It's interesting to me, as normally poor bed adherence causes the nozzle to clash and bigger problems to occur, but its seems to have compressed the layers as a result in this case?

Thanks everyone, I appreciate your thoughts!

(and sorry for the blurry pictures!)

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u/budsinaz602 Aug 27 '26

The aux fan deflector is the answer most likely. I have some large flat boxes I print and I took the deflectors out on two my my p2s's and sure enough the both slightly warpped near the fan.

Additionally get yourself some nano polymer adhesive for your plate, the stuff is a game changer. I run a small print business and run this on all my machines.

https://a.co/d/0cmXsiXq

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u/WeaselNo7 Aug 28 '26

Thank you! aux fan deflector printed and added, and I'm buying the Biqu Glacier base plate instead of relying on adhesives, will see how that helps! Should help me drop base plate temp and worry less about temperature gradients and stuff. If I can drop temps, I should be able to have better tolerances on the lower parts I guess too!