I am trying for the first time to print with ULTEM 1010 also this is the first time that I've used the second (high temp) head.
Just before commencing the print job I can extrude just fine using the control panel. However, when printing it seems that the filament isn't being told to drive. Probably a wrong setting in the Process but I have not been able to figure it out.
Attached is the factory file. Ideas?