How to fix stringy and messy TPU 3D prints

Question: Why is my TPU 3D print stringy and messy?

Answer: Stringy, messy prints with TPU usually result from incorrect print settings or filament quality. Start by lowering your print temperature in 5°C increments; TPU typically prints best between 210°C and 230°C. Too high a temperature causes excessive oozing and stringing. Next, increase your retraction distance and speed—try 1.5 to 2 mm retraction at around 30-40 mm/s, but adjust carefully as TPU is flexible and can jam if retracted too aggressively. Also, slow down your print speed to 20-30 mm/s to improve control. Make sure your nozzle is clean and that the filament is dry; moisture causes bubbles and stringing. Finally, enable combing or coasting features in your slicer to reduce travel moves and pressure at the nozzle. By systematically tuning these settings, your TPU prints will become cleaner and less stringy.