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PolyFlex
Composed of 90% thermoplastic urethane (TPU) and 10% polylactic acid or polylactide,
commonly known as PLA, this blend exhibits more stiffness and hardness while still retaining
flexibility. PolyFlex is perfect for strong printed objects that need to flex while still holding their
shape. The manufacturer reports a hardness of 90-95 Shore A which is slightly more flexible
than SemiFlex, at 98 Shore A hardness.
PolyFlex adheres exceedingly well to our PEI print surface. We strongly recommend printing on
the bare glass side of the Modular Print Bed System or treat the PEI print surface with PVA glue
stick (such as Elmer’s® brand) before printing to ensure easy part removal.
Extrusion Temperature: 220°C
PEI Print Surface Temperature: 40°C
Part Removal: Off
Tips: Print on bare glass or treat PEI print
surface with PVA glue stick.
Extrusion Temperature: 225°C
PEI Print Surface Temperature: 40°C
Part Removal: Off
Tips: Print on bare glass or treat PEI print
surface with PVA glue stick.
SemiFlex
SemiFlex performs well as a tough, flexible filament with an exciting combination of pull
strength, shock absorption, and print resolution. SemiFlex is a semi-hard flexible filament that
comes in several different colors that have a slight sheen after being 3D printed.
Since SemiFlex is harder than other flexible filaments, complex parts like device cases with
overhangs, holes, and details are easier to print while still maintaining its flexible nature.
SemiFlex also has applications in robotics due to its ability to function as a tread or grip.
SemiFlex adheres exceedingly well to our PEI print surface. We strongly recommend printing on
the bare glass side of the Modular Print Bed System or treat the PEI print surface with PVA glue
stick (such as Elmer’s® brand) before printing to ensure easy part removal.
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