Stringing on Anycubic Viper I recently bought a Anycubic Viper which prints overall not bad but has a real nasty issue with stringing. I tried out several temperatures, settings for retract distances and retraction speed but nothing seems to really work. All of my filament is new and stringing occurs with different brands so it does not seem to be caused by the filament. When the nozzle heats up there is molten filament coming out of the nozzle even the extruder is not doing anything at all. Is there something I can try to fix the stringing apart from taking the hotend apart? Retraction tower with different retract-values: ![3D print showing stringing]( "3D print showing stringing#1") Retract test which shows the stringing: ![3D print showing stringing#2]( "3D print showing stringing#2")

Thanks for the answers. In this special case the printer had a hardware-defect,so I had to send it back.

I don't know which part in detail was defect but the hotend was switched off in the middle of the print, so either the hotend or something at the mainboard.