We have a mini we got for our high school student about a year ago, never had any issues with it. Just this week it stopped feeding filament – pictures attached.
I’m not sure how to diagnose, where to go from here. I tried adjusting the tension on the filament feeder, as well as changing the retraction speed. Nothing seems to matter, and nothing but a small dribble will ever come out of the hot end. Mostly it will just spin like its trying to retract, but never actually pull anything in, and after awhile digs mostly through the filament. The skate bearing there seems to move freely, and ive taken a small brush and cleaned out the feeding bolt grooves, all to no avail.
This is with ABS plastic, and I’ve tried a few spools - doesnt seem to make a difference. Also tried heating it hotter than normal with no success.
Any suggestions would be greatly appreciated, I don’t know what to try next to get this fixed?