I have been printing ASA, ABS and PETG from extrudr for a little over a month now, all the time with no problems. Also the ngen of colorfabb worked wonderfully.
The problem occurred only now with PLA NX2 from extrudr. All rolls are the same, all plastic, etc.
I have tried a few things without success. Now I have once exchanged roll 3 with roll 4. It worked a few times until then once slot 4 made problems. At the moment this slot works again.
So it could be the filament, the roll itself is identical to the others because the same manufacturer.
I will dry the roll with the drying function of the X1 Carbon, let’s see if that brings something.