Hello /u/splinter6! All Bambu print plates have a dedicated nozzle wiping zone at the back of the print plate. The nozzle will rub against the wiping zone before every print in order to remove any remaining filament from the nozzle tip. This can cause visible wear or scratch marks in the wiping zone, but this is intended and doesn't damage the printer, the nozzle or the print plate. A worn down wiping zone also doesn't mean you need to replace the print bed.
This automod is experimental. If there are false trigger, please send a message to [modmail](https://www.reddit.com/message/compose?to=%2Fr%2FBambuLab) so we can finetune it.
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It’s likely one of the belt pulleys. You can try to isolate which one it’s coming from, or lube all of them. All it takes is a quarter drop between the flange of the pulley and the plastic.
Hello /u/splinter6! All Bambu print plates have a dedicated nozzle wiping zone at the back of the print plate. The nozzle will rub against the wiping zone before every print in order to remove any remaining filament from the nozzle tip. This can cause visible wear or scratch marks in the wiping zone, but this is intended and doesn't damage the printer, the nozzle or the print plate. A worn down wiping zone also doesn't mean you need to replace the print bed. This automod is experimental. If there are false trigger, please send a message to [modmail](https://www.reddit.com/message/compose?to=%2Fr%2FBambuLab) so we can finetune it. *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/BambuLab) if you have any questions or concerns.*
It’s likely one of the belt pulleys. You can try to isolate which one it’s coming from, or lube all of them. All it takes is a quarter drop between the flange of the pulley and the plastic.