Quick diagnosis

Print TPU more reliably by slowing down, reducing retraction, managing moisture, and avoiding sharp filament paths.

Likely causes

Wet TPU
Speed too high
Retraction too aggressive
Bowden path friction

Step-by-step fix

Dry TPU before printing.
Slow print speed significantly.
Use minimal retraction.
Keep the filament path smooth and low-friction.

What to check before changing more settings

Only change one variable at a time. Save your current slicer profile before testing, use a small repeatable test print, and compare the result before moving to the next adjustment.

Recommended tools for this fix

Helpful gear to check

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