

FiberFlex 40D is a flexible 3D printing material by Fiberlogy. This filament combines speed and precision effortlessly without compromising print quality. Parts 3D printed with FiberFlex 40D have a Shore hardness of 40D, excellent interlayer adhesion, high impact resistance, resistance to low temperatures, and impressive durability against chemicals and abrasion. Whether you're an amateur enthusiast or a seasoned professional, FiberFlex 40D offers versatility for a wide range of applications, providing a spectrum of vibrant colors to suit any project.
In the realm of machinery, FiberFlex 40D proves invaluable for crafting rubber elements like gaskets and components subjected to frequent bending, ensuring both flexibility and durability. The filament's versatility extends to the realm of gadgets, where it finds its place in crafting phone sleeves, cases, and straps for watches, pulse counters, and pedometers. Another possible application for this material are linking elements such as flexible hinges.
In the world of toys, FiberFlex 40D can be utilized for crafting tires and rubber figures, providing a resilient material for play. Furthermore, its potential extends to the realm of jewelry, offering an ideal filament for creating bands and bracelets that seamlessly blend flexibility and strength. With FiberFlex 40D, the applications are diverse, ranging from industrial machinery components to everyday gadgets, toys, and even personalized accessories like jewelry.
What makes the Fiberlogy FiberFlex 40D filament truly versatile is that it has been favorably assessed to be part of the Open Filament Program by Raise3D. This makes it possible to extrude this filament on the Pro3 printer.
General information |
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Material | TPU/TPE |
Format | 850 g |
Density | 1.16 g/cm³ |
Filament diameter | 1.75 / 2.85 mm |
Filament tolerance | ±0.02 mm |
Filament length | (Ø 1.75 mm) ±304.6 m / (Ø 2.85 mm) ±114.9 m |
Printing properties |
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Printing temperature | 200-220 ºC |
Print bed temperature | 50-70 ºC |
Chamber temperature | - |
Cooling fan | 50-75 % |
Recommended printing speed | 45 mm/s |
Mechanical properties |
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Elongation at break | (ISO 527) 700 % |
Tensile strength | (ISO 527) 28 MPa |
Tensile modulus | - MPa |
Flexural strength | - MPa |
Flexural modulus | - MPa |
Surface hardness | (ISO 527) Shore 40 D / 91 A |
Thermal properties |
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Melting temperature | 160 ºC |
Softening temperature | 70 ºC |
Specific properties |
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Transparency | ✗ |
Chemical resistance | ✓ |
Other |
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HS Code | 3916.9 |
Spool diameter (outer) | - mm |
Spool diameter (inner hole) | - mm |
Spool width | - mm |
The ideal printing temperature for FiberFlex 40D is between 200 ºC and 220 ºC on a heated bed at 50-70 ºC at a speed of 45 mm/s, with the layer fan set to 50-75 % and the flow rate set to 105-110 %. It is not necessary to print this filament in a closed chamber. The recommended retraction speed for FiberFlex 40D is 10-30 mm/s, and the optimal retractions are 1-2 mm for direct extrusion. The manufacturer suggests printing this filament on glass with Kapton tape. To facilitate the removal of the part, it is recommended to heat the bed to 110 ºC.
The proper storage of FiberFlex 40D filament is essential, as processing a wet filament can lead to polymer chain degradation, fragility, poor layer adhesion, stringing, and oozing. It is best to store the filament in a sealed bag with desiccant or in a vacuum-sealed filament container. If the filament absorbs excess moisture, it should be dried in a filament dryer at 60 ºC for 4 hours before it can be extruded.