I got my A1 less than 2 months ago and been loving it.
Not sure if related but on the past weekend I did a clean and re-lubing of the axis. Even since then I’ve been having this weird sound that sounds like a high pitched grind. Not sure if it’s when the bed moved quickly forward or when the tool head moves horizontally quickly.
Unfortunately due to room constraints I have the printer at my parents house but my dad send me a video of the printer making this sound. He also mentioned that it’s been doing it in every print so I can safely say it’s not a slicer settings issue and I’ve been using the Bambu Lab PLA Basic for all my prints since purchase so I think we can eliminate that as an issue.
Adding the video link here: Watch A1 high pitched grind | Streamable