Today I found this on the PEI plate of my P1P. Is that normal?
Yes. They all do that, it is intentional.
# Wipe zone on the build plate
Before printing, there may be some filament residue remaining on the nozzle, and if not cleaned, it can cause surface defects on the printed object.Therefore, the nozzle is first wiped on a nozzle wiper before printing starts and then repeatedly wiped in a specific area on the build plate (wipe zone).This helps to clean the filament residue on the nozzle and stabilize the chamber pressure inside the nozzle. This prevents surface defects on the printed object due to filament residue on the nozzle.
For the X1C, P1S/P1P, and A1 printers, as the nozzle comes into direct contact with the build plate, there may be some “wear” observed in the wipe zone (as shown in the image below). However, this phenomenon does not affect the functionality of the nozzle or the build plate.
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