AnswerHardware
Do you need glue stick on textured PEI?
Not for PLA, PETG or TPU. Prusa requires a glue stick for ABS, ASA, nylon and PC Blend on textured PEI, and Bambu Lab says those four may need one.
Tagged “build-plates”
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AnswerHardware
How often should you wash a PEI build plate?
Wash it when prints stop sticking, not on a schedule. Prusa wipes with about 90% IPA and saves soap for a last resort; neither maker allows acetone on textured PEI.
AnswerTroubleshooting
Why won't TPU come off the build plate?
TPU welds itself to a hot bed, a squashed first layer or bare smooth PEI. Bambu Lab lists 35 to 45 °C on PEI plates. The causes, the fixes and a safe way to peel it.