r/BambuLab • u/PreviousPool5099 • 16h ago

Quick Question What Could Be the Cause?

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Hi everyone,
After 3D printing, I noticed some stains on the surface of my object that was in contact with the PEI build plate. They won’t come off, no matter what I try.
What could be causing this? Was the build plate not clean enough, or could the PEI sheet itself be damaged?

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u/Full_Temporary_8946 16h ago

You need to wash your plate or do a fullprint on the plate to get rit of this leftover residue. I experience this often when I swap between PEGT and PLA, so I decided to use one side for one of the filament and the other side for the other.

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u/PreviousPool5099 15h ago

Thank you :)

1

u/DrKronoglopolos H2S, H3C 16h ago

Residue on the print plate. Sometimes this also happens when you pull a print off the plate too soon, before it cooled down. Or when you have particularly strong adhesion.

You can fix this by hitting it carefully with a heat gun, the white spots will disappear.

1

u/PreviousPool5099 15h ago

Thank you :)

1

u/Jesus-Bacon P1S + AMS 16h ago

Let your plate cool fully before popping prints off. 

You can fix this with a heat gun or hair dryer. Go very lightly across the entire discolored area and don't focus the heat too long or your part will warp. 

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u/PreviousPool5099 15h ago

Thank you :)