Please help me diagnose this issue

Any suggestions and or opinions as to why my prints face is coming out with these lines?
I have attached a picture for attention.

Desperately need help.

Legna Pol

Is your filament running easily?- It seems your extruder partially gets stuck (because of hard pulling on the spool) or gets clogged.

Be sure your filament spool is very easy to roll, ideally on the top of the machine with a spool holder where the extruder could pull straight without any edge.

This issue could also happen if you print too fast, the your extruder would grind the filament.


Have you calibrated extrusion/esteps?

Raise nozzle temp?