When my print starts off the quality is very high and seems to work very well however after a few layers the quality seems to reduce significantly and becomes irregular and doesn’t stick to the layers below.
In the link below is the upside of the print where the quality is poor after a few layers have been printed.
As a quick test when the printer starts adjust the Z axis manually by turning the lead screw by hand.
In your case lower it until the plastic is kind of squished on the bed.
If this helps recalibrate the Z axis height.
I tried reducing the hotend temperature and and it didn’t make any difference so I varied the z-axis height and still no improvement.
This is what the first layer looked like.
[quote=“LMB20”]I tried reducing the hotend temperature and and it didn’t make any difference so I varied the z-axis height and still no improvement.
This is what the first layer looked like.
I´ve had this problem and manually pushed the filament down a little bit. The print then resumed and finished successfully.
Afterwards, I have tightened the screw that presses onto the filament a bit more as I supposed that the problem might be caused by the filament spool pulling too much, therefore the filament slipping back through the extruder. Though, not sure about this.