I recently purchased the TAZ 4 printer, with a 0.50mm nozzle. I have used about 3/4 of a 2.2 lbs, Gizmo Dorks 3mm ABS Filament.
While printing something earlier today, filament had stopped feeding through the hot end. I have tried heating it up to 240 C, then manualy pushing the ABS through the hot end, trying to unclog it but have not had any luck. I am in the process of trying to removing the nozzle, but it seems like it is seized.
I followed the procedure in the manual to remove the nozzle, heating up to 160 C, and using the supplied 13mm wrench. I have tried this about 5 times, but the nozzle will not budge.
Attached is a picture of how much I have been able to remove the nozzle.
Do I just need to use more force in removing the nozzle? I am worried I will strip the threads on the nozzle, or the hot end.