Question: Why is my TPU 3D print stringy and messy?
Answer: Stringy and messy prints with TPU usually come from incorrect print settings or filament handling. Start by lowering your print temperature; TPU typically prints best between 210–230°C, but too high a temperature causes excessive oozing and stringing. Next, increase your retraction distance slightly (around 2–4 mm) and speed, but be cautious as TPU is flexible and can jam if retracted too aggressively. Slowing down the print speed to 20–30 mm/s helps control filament flow and improves quality. Ensure your hotend and nozzle are clean to avoid partial clogs. Also, check your filament storage; moisture can cause stringing, so keep TPU dry in a sealed container with desiccant. Finally, enable combing and coasting features in your slicer if available to reduce stringing further. Adjust these settings step-by-step and run small test prints to find the best combination for your specific TPU brand and printer.
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