hi i’have an A1 and produces a bulge everytime it reaches a hole or wall inside(ad example bottom of a box), i tried a decrease speed or increase the inside wall but doesn’t work
can anyone help me? thanks
print with PLA 0.4 layer height 0.20
Been there, done that, never fully solved it.
But it all gets MUCH better once the filament is calibrated properly.
Another great help is to make sure there is not too massive speed and layer time changes.
Sometimes printing a bit slower is the only way 
in my opinon is just the layer time the problem but i can’t change it , i tried many option without any result
It is a unique flaw of Bambu printers, never had the issue as bad with other printers.
Another thing to look for is the hole compensation.
For some reason it often effects more than holes.
I try to keep it at zero.
where does it change the hole compensation?
Prepare tab, precision - in there you fond the holes and some other things.
You might have to switch to advanced mode to see these.
