leizhuo

Problem Description: I found my extruder is running above model with nozzle clogged when I return office after 3 hours start printing. Several material drippings are found on the model sections. 1. It is single material printing – PVA material. CURA setting is shown in the attachment. 2. Before start printing, I set print core temperature to 200 ℃ and try hot pull several times for nozzle clean. Meanwhile, I cleaned extended extruder suite feeder for filament importing easily. In the start, the material exporting is fluent and boundary line is broad; everything seems perform in a regular routine. 3. I tried two times for printing, but they failed in the same way. It seems this case happens randomly. How to fix this case?