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Intro
Flexible filaments like TPU unlock phone cases, gaskets, and wheels—but they behave differently from rigid plastics. Here’s how to succeed with them.
Printer setup
- Direct-drive extruder strongly recommended
- Use slow speeds (~20–30 mm/s)
- Disable retraction or keep it very short
- Use a clean, smooth filament path
Slicer settings
- 0.2 mm layer height, 2–3 walls, 20–30% infill
- 210–230 °C nozzle / 40 °C bed
- Cooling: 50–60%
- Speed: slow and steady
Adhesion tips
- PEI or textured build plates work well
- Avoid glue—TPU can stick too hard
Common problems
- Stringing — reduce temp, slow down
- Under-extrusion — keep filament dry, slow speed
- Clogs — ensure a smooth path and no sharp bends
Post-processing
- Trim with sharp scissors or hobby knife
- Can be sanded lightly; avoid heat guns
FAQ
Can Bowden printers handle TPU? Yes, with patience—use slow speeds and minimal retraction.
Is TPU strong? Yes—very tear-resistant and durable.
Wrap-up
Slow down and guide TPU carefully. With the right settings, you can produce flexible, functional parts reliably.
Thanks for reading! If you have any questions then please drop me a message using the contact form below
Dylan
