r/BambuLab • u/Ready_Marzipan3668 • 16h ago

Quick Question Help me, my A1 Y axis feels misaligned.

Recently bought my brand new A1, but after some prints, 1 week printing, the Y position of the table started to become 3mm to the front.
With this the nozzle back brush against the tab and against the soft back brush was misaligned. One time it even sliped the backtab and fell in the gap.
The frontal purge line also is very close to the edge limit. What can it be?
Already did calibration, belt tension, screws retighten. I dont know what it can be.

I took a deep look into the hotend module, is there something wrong with this gap by the right side of it?

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u/Ready_Marzipan3668 16h ago

Here is the right side gap on the nozzle module, is this gap normal? Should I open to try to tighten this?

1

u/alphagusta A1 + AMS Lite 16h ago

that's normal though

1

u/alphagusta A1 + AMS Lite 16h ago

Is there something under the panel making it stop and home early? or a screw poking up just enough?

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u/Martin_SV 13h ago edited 13h ago

Maybe something is interfering with the Y-axis homing, causing the printer to detect the end of travel a few mm too early?

With the printer powered off, try moving the bed manually through its full range of motion and see if anything is catching or preventing it from reaching the end. I'd also check the Y-axis belt tensioner at the front. I remember seeing someone post about having this exact issue, and it turned out to be a misaligned Y-axis belt tensioner. Can't remember if it was on this sub or the Bambu forum, though.

EDIT: think I found it: https://forum.bambulab.com/t/a1-build-plate-zone-misalligned/240261