How to fix stringy and messy TPU 3D prints

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

Answer: Stringiness in TPU prints usually comes from excessive oozing or improper retraction settings. Start by reducing your print temperature by 5-10°C; TPU typically prints well between 210-230°C, but lower temps can reduce stringing. Next, adjust your retraction settings: increase retraction distance slightly (try 2-4 mm) and speed (around 20-40 mm/s), but be careful not to cause clogging. Slow down travel moves to about 150-200 mm/s to help reduce strings. Make sure your nozzle is clean and check that your filament is dry, as moisture can worsen stringing. Finally, enable combing or coasting features in your slicer if available, as they help prevent oozing during travel. Testing small adjustments one at a time will help you find the best balance for your specific printer and TPU brand.

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