TPU Printing Parameters Guide: Temperature, Speed and Bed

Baseline temperature window

Nozzle: 220–245 °C. Soft grades (65A–75A) sit at the cooler end to reduce stringing; firm grades (90A–95A) can use the upper range for stronger layer bonding.

Bed: 40–60 °C. A heated bed is recommended; use glue stick or a textured PEI plate for soft grades.

Speed

Start at 20–30 mm/s for 65A–80A, up to 40–50 mm/s for 90A–95A. Use direct-drive extruders; bowden users should keep speeds below 25 mm/s and retraction minimal (1–2 mm).

Drying before printing

TPU absorbs moisture quickly. Dry at 55–70 °C for 4–6 hours before printing, and store printed spools in vacuum bags with desiccant. Wet TPU produces popping, stringing and reduced strength.

Retraction and layer height

Keep retraction at 1–3 mm at 20–40 mm/s. A layer height of 0.16–0.2 mm balances quality and speed for most parts.

Full parameter tables for each grade are available on the product pages and in downloadable datasheets.