I was printing PLA, it looks ok up to a certain height (although it was warping slightly), but then it becomes ugly. I will do a test print of the same height, butaybe you already have an idea.
Thank you, I will give that a try.
Maybe it was just tangled filament?๐ค
White my test print from afterwards (after unspooling the last two meters from my first self rolled spool ๐ ), grey a print from a few days ago.