Stefanbos

Hi everyone, I have a problem with the printing of PP: at some point during the printing, the material inflow or something stops, resulting in frayed endings. This sometimes happens at the beginning of a print (see picture 1 and 2) or when the print is more at the end (picture 3). I have tried to solve this by changing the printing temperature, the printing speed, and the layer height, but it doesn't work. Does anyone know some more actions I can try? Thanks in advance!