Nozzle raking across model surface when it goes to prime tower

Bambu Lab A Series Troubleshooting
1

I’ve noticed on a number of occasions that when the extruder runs over to the prime tower, usually when it’s just printing a single color over and over for a later color change, I can hear it raking across the surface of the model making a noise as it hits each part it encounters.

This is not a good thing for long-term bed adhesion to just whack a bunch of pieces. Shouldn’t it be lifting up before making such a run?

EDIT: I have a short video of it doing one of these, but no idea how to post it here.

2

Don’t mean to highjack your post but I’m experiencing that same issue and would like to know the cause and solution as well

3

I’ve been told that under the Others tab, unchecking the final entry “Reduce infill retraction” checkbox will fix this.

1 Like
4

th3tick is correct. that setting change will fix this issue 100% as long as the screws behind the heater block are tight.