I am using FlashForge Guider 2 S printer, and while printing with PLA I have no issues , when I print with ABS the quality is terrible.
I tried to change to a new material, reduce temperature, change extrusion ratio, change retraction length , print different parts, levelled the machine table, checked nozzle table distance the and still always the same.
As you can see in the attached picture, the part on the left seems to be ok, while the part on the right quality is very bad. I even tried to print a simple 20mm box, and still same issue. As you can see in the pictures the nozzle is sink inside the material and damaging the part structure.
If anyone encounter similar issue or can advise me how to solve this issue please let me know, just emphasising again that with PLA I have no issues.