Bambu Lab TPU 95A HF
Manufactured by Bambu Lab
Quick Summary
Flexible filament used to mean slowing the printer to a crawl. Bambu’s high-flow TPU 95A is the version that mostly fixes that: it melts fast enough to print at speeds that would have jammed a standard TPU, and on current hardware it feeds through the AMS. Print temperature sits around 230 °C, and drying at 70 °C for 8 hours is not optional.
Print Settings That Work
230 °C nozzle, bed anywhere from 30-60 °C depending on plate. Wall speed under 80 mm/s is the guidance that matters; the “3x faster” claim is real relative to ordinary TPU but the failure mode of pushing too hard is a clog that takes the hotend apart to clear.
Keep retraction minimal, near zero on direct drive. Straighten the filament path. Print from a dry box or dry the spool first, because TPU absorbs water fast enough to ruin a print that started fine.
Cooling around 40-50% holds overhangs without hurting layer bonding, which is excellent regardless.
Print Quality
Layer adhesion in TPU is exceptional and this is no exception; finished parts tear rather than delaminate. Surfaces are matte with a slightly grippy feel. Overhangs and bridges are better than standard TPU because the material sets quickly after extrusion.
Bed adhesion is strong to the point of inconvenience on smooth plates. Use textured PEI and let the plate cool fully before removing thin parts.
Stringing exists, as it always does when you cannot retract properly. Expect a light cobweb between towers and plan on a quick pass with a heat gun.
Where It Falls Short
Moisture sensitivity is the practical burden. Storage matters more than settings, and a spool left out over a humid weekend needs a full dry cycle before it will print well again.
The price is a clear step above budget TPU, and away from a Bambu printer with an AMS you are paying for speed alone. Very small features and sharp corners still round off; that is TPU, not this spool.
Verdict
For gaskets, straps, bumpers, and phone cases printed on a modern fast machine, TPU 95A HF removes most of the pain flexible filament used to involve. Buy PolyFlex if you want the same softness for less on a slower printer, and only go softer than 95A when the part genuinely needs it.
- Bambu Lab TPU 95A HF vs polyflex tpu95 — PolyFlex TPU95 is the printer-agnostic standard and slightly cheaper per kilo; the Bambu HF version prints considerably faster and feeds through an AMS.
- Bambu Lab TPU 95A HF vs sunlu tpu 95a — SUNLU is the budget 95A. Bambu HF costs more and repays it in speed and feeding consistency.
- Bambu Lab TPU 95A HF vs ninjaflex tpu — NinjaFlex at 85A is far softer and far fussier. Start with a 95A like this one unless you specifically need the extra squish.
What temperature should I print Bambu TPU 95A HF at?
Around 230 °C at the nozzle with a warm bed. The high-flow formulation is designed for higher speeds than standard TPU, but keeping walls under about 80 mm/s still gives the most reliable results and the least chance of a clog.
Does TPU 95A HF work in the AMS?
Bambu supports it in the AMS on current hardware, which older TPU could not manage. It still prefers a short, smooth filament path, and printing from an external spool remains the most reliable option for long jobs.
How do I dry Bambu TPU?
The data sheet calls for 70 °C for 8 hours. TPU is highly moisture sensitive; a wet spool pops audibly during printing and produces rough, weak parts.