High-Flow TPU prints at about 240 °C with a 45 °C bed and 40% part cooling. Usable range 220–255 °C nozzle, 25–60 °C bed. No enclosure needed.
HF TPUHigh-Speed TPURapid TPU
Starting settings
Nozzle
220–255 °C (start 240)
Bed
25–60 °C (start 45)
Part fan
0–60% (start 40%)
Wall speed
40–100 mm/s
Max volumetric flow
9 mm³/s
Shrinkage
0.6%
Softens at
-35 °C
Enclosure
Not needed
Nozzle size
0.4 mm or larger — 0.4 mm recommended
Nozzle material
Brass is fine
Drying
50 °C for 6 h
Speed
Genuinely fast for a flexible — 40–100 mm/s where standard TPU tops out around 30. That figure assumes a machine that can actually deliver it: direct drive, a high-flow hotend and a short constrained filament path.
Bed surface
Clean smooth PEI at 45 °C.
Nozzle
0.4 mm is fine. The formulation is what makes it fast, not the nozzle.
What bites people
The speed comes from the formulation, not from your settings. Running standard TPU at these speeds jams it; running this one slowly merely wastes the point of buying it.
The advertised numbers assume a modern enclosed machine with a high-flow hotend. On an older Bowden printer this behaves much like ordinary TPU, and no profile fixes that.
Runs hotter than standard TPU. A profile borrowed from a 95A spool will under-extrude at pace.