Question: Why is my TPU 3D print stringy and messy?
Answer: TPU is a flexible filament that requires specific print settings to avoid stringing and messy results. Start by lowering your print temperature in 5°C increments, aiming for around 210–230°C depending on your filament brand. Too high a temperature causes excess oozing and stringing. Next, increase your retraction distance and speed carefully; TPU is flexible, so too much retraction can cause jams, but a small increase helps reduce strings. Try settings like 2–4 mm retraction at 20–30 mm/s, adjusting based on your printer. Also, slow down your print speed to around 20–30 mm/s to improve control. Make sure your nozzle is clean and your filament dry, as moisture can worsen stringing. Finally, enable combing mode or use a wipe nozzle setting if available to reduce travel moves that cause strings. Test these changes one at a time to find the best combination for your setup. This approach will help you get cleaner TPU prints with minimal stringing.
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