This filament was reviewed in my flexible comparison video: https://www.youtube.com/watch?v=MXoiqWxPuwM

VERY HARD TO PRINT.  Requires a direct, geared extruder.  Dual drive preferred.  This is likely the hardest flexible I have tried to print.

3DXFLEX™ TPU 90A Thermoplastic Polyurethane 3D Filament

3DXFLEX™ TPU elastomer is an engineering-grade material that we chose based on its balance of ease of printing, flexibility, chemical resistance, and toughness.  3DXFLEX™ TPU has a hardness of 90A allows you to make very tough, impact resistant and flexible prints.  We recommend direct-drive extruders but experienced users can be successful with Bowden-type drives.

Benefits of 3DXFLEX™ TPU 90A Filament:

  • High elongation (>500%)
  • Ease of printing
  • Excellent layer bonding
  • Bonds great to other plastics
  • Outstanding fatigue resistance
  • Very low odor while printing
  • Low moisture absorption
  • Retains flexibility even at low temperatures
  • Styrene and BPA Free
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Filament Diameter Specs:

  • 1.75mm +/- 0.05mm
  • 2.85mm +/- 0.05mm

Recommended Print Conditions:

  • Extruder Temp:  220-240°C
  • Bed Temp:  23-40°C
  • Bed Prep:  Hairspray or Glue Stick on clean glass
  • Fan Speed:  Medium to High
  • Print Speed:  Flexible 90A prints slower, about 20 mm/s to start, then increase as you become more familiar with the material.
  • Experience Level: Moderate to Advanced.  Printing with elastomers is a bit more complicated than hard plastics and generally requires more experience and an extruder purposefully built or modified to handle flexible filaments.