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FormFutura® Python Flex

About The Materials 

Python Flex is a flexible TPU type of 3D printer filament with a shore hardness of 98A and it perfect for 3D printing strong and resilient parts that require flexibility and elasticity.

Materials Documentations

Python Flex is a high-performance flexible thermoplastic polyurethane (TPU) filament, which is designed for high speed printing on both direct drive and Bowden style extruders. Python Flex is an extremely easy to print flexible filament which can be printed directly on a glass plate without having to use the heatbed. Python Flex has a shore hardness of 98A and has great elastic properties as allows itself to be stretched up to 450% before breaking. Python Flex is extremely transparent in its natural form and has excellent resistance to oil, greases, microorganisms and abrasion.

Unique features

  • Perfect combination of strength, flexibility and elasticity

  • Designed for high speed printing

  • Flexible filament that can be printed at speeds of >80mm/s

  • Heat resistant up to 138°C

  • Watertight printing possible with only single wall prints

  • Excellent resistance to oil, greases, microorganisms and abrasion

  • Very easy to print on both direct drive & Bowden style extruders

  • Warp-free printing and no deformation after cooling

    • Improved flowing behaviour and inter-layer adhesion

    • Good first layer adhesion to several (un)heated print surfaces

General printing guidelines *

Nozzle size: ≥ 0.25mm

Layer height: ≥ 0.1mm

Flow rate: ± 110 - 130% *

Print temp: ± 220 - 250° C *

Print speed: Medium-Fast

Retraction: Yes ± 5mm

Heat bed: ± 0 - 60° C

Fan speed: 50-100%

Experience level: Intermediate

*) Above displayed settings are meant as guidance to find your optimal print settings. These ranges in settings should work for most printers, but please do feel free to experiment outside these ranges if you think it is suitable for your printer. There are a lot of different type of printers, hot-ends and printer offsets that it is extremely difficult to give an overall one-size-fits-all setting.

*) Print temperature depends on printing speed and wall thickness (e.g. ± 220 - 230° C for single wall objects with no infill at 50mm/s and ± 245 - 255° C for high infilled objects at 100mm/s)

*) Flow rate depends on configuration of hotend and feeder setup, but is increases when printing speed increases (e.g ± 110% for 50mm/s till even 130% for 100mm/s

Compliance *

This filament is compliant to below listed directives and regulations.

  • RoHS directive 2011/65/EC

  • REACH directive 1907/2006/EC

*) This declaration of conformity to directives and regulations is prepared according to our present standard of knowledge and may be amended if new cognitions are available and applies only for the above described products.






500g, 2300g

1.75mm, 2.85mm

Clear, Black, White