Filament feed rate problem

[1828peter]

Hi.
I am having constant problems with uneven printing. After investigation it seems that the brass cog that feeds the filament through the extruder is becoming clogged after printing for 10 mins or so. The cog then stops pulling on the filament and causes a circular gouge halfway through it. Could the quality of the filament be at fault causing crumbling which leads to clogging as we are 100m towards the end of the reel or some other reason?

[Saamec]

Look for the answer in the forum. On this question the answer was given 40 times. At least it is already 10 theme with this question. If you only bought the printer advise you to read the whole forum.