First layer issue

P1S using bambu pla basic filiment.


This just started to happen.
I have printed nearly full bed plate draws with a perfect first layer but now I’m getting this.
It happens at the same spit every time.

Clean your plate

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Welcome to the forum.

Second “Clean your Plate”.

Bambu has a wiki about cleaning your PEI plate with examples of what a dirty/oily plate prints like. Looks exactly like your first layer.


Dish soap and hot water. Give it a really good scrub.

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I did a bed clean and a factory reset and its now perfect again. Because i stupidly did both Im not sure what fixed it.
Thanks for helping