I have been printing a number of these designs two at a time in ABS for a week, basically non stop. Each job takes about 29 hrs. No problems until yesterday. Suddenly my K2 Pro stops printing about 30 minutes into the job. The printer error says it senses filament not being extruded.
I checked everything and restarted the print job and it appeared to be working fine, but failed at the same point the second time about 30 minutes into the job. What’s going on?
As the picture shows, the CFS is full of filament. It’s obviously able to feed filament because it will print for 30 minutes before stopping. It’s curious that it seems to stop at roughly the same point each time.
Thanks for any ideas to correct.


