Stringing
Test Nozzle Temperature and Retraction.
Stringing can be caused by Nozzle Wear.
Stringing can be caused by Bowden Tube Gap.
Designs:
Temperature Stringing calibration blocks
Consider changing the Combing Mode in your Slicer.
PrusaSlicer:
Consider reducing Z Lift.
Supporting Documentation
Videos:
Stop Ender 3 Stringing with this One Weird Trick! (ok but seriously)
- 3d Printing without Stringing and Understanding 3d Print Failures