Flexible TPU filament for durable, bendable 3D printed parts

Sakata Re-Flex-920 is a 1.75mm flexible filament in black supplied on a 1kg spool. The TPU material is suited to prints that need elasticity, impact resistance, and better resilience than rigid plastics.

The flexible composition helps printed parts bend and recover without cracking as easily as standard rigid materials. Black TPU is a practical choice for functional components, protective parts, and everyday-use items where grip and durability matter.

Key features of Sakata Re-Flex-920

  • Flexible TPU material: Produces parts that can compress, bend, and absorb minor impacts.
  • 1.75mm filament format: Fits the most common desktop FDM/FFF printer size.
  • 1kg spool: Suitable for repeated prototyping, production runs of small parts, and multi-part projects.
  • Black finish: A practical colour for functional prints, wear items, and parts where surface marks are less visible.
  • Strong layer bonding: Flexible TPU materials are valued for durable interlayer adhesion when printed with the correct setup.

Where flexible black TPU filament works best

Sakata Re-Flex-920 is well suited to applications where a printed part needs to flex in use instead of staying rigid. Makers and product designers often use TPU for phone mounts, feet, spacers, cable guides, sleeves, cases, and custom contact surfaces.

The material also fits workshop, robotics, and light industrial projects that benefit from shock absorption or surface grip. For educators and prototyping teams, flexible filament is useful for demonstrating living-fit concepts, ergonomic shapes, and soft-touch components.

Practical printing considerations for TPU projects

Flexible filament usually prints best at moderate temperatures, reduced speeds, and with a controlled filament path. A direct drive setup is often the simplest option for consistent feeding, especially on parts with frequent retractions or detailed geometry.

Dry storage is important for reliable surface quality. Keeping the spool sealed with desiccant helps maintain print consistency and reduces moisture-related artefacts such as stringing or rough extrusion.

Specifications

Technical specifications

BrandSakata
Product NameRe-Flex-920
ColourBlack
MaterialTPU flexible filament
Filament Diameter1.75mm
Net Weight1kg
Printing Temperature220–245°C
Bed Temperature40–60°C
Print Speed20–40 mm/s recommended
Bed AdhesionPEI, textured build plates, or glue stick on smooth surfaces
EnclosureNot required
Drying GuidanceDry before use if moisture is present; store sealed with desiccant
Compatibility

Will it work with my printer?

Works with

Sakata Re-Flex-920 in 1.75mm works with FDM/FFF 3D printers that accept 1.75mm filament and can print flexible TPU materials.

Printer requirements

A direct drive extruder is typically the easiest setup for flexible filament. Bowden systems can also work when the filament path is well constrained and print speeds are kept low.

Nozzle and build surface

A standard 0.4mm nozzle is commonly used for TPU. PEI sheets, textured plates, or a light adhesive layer on smooth beds can improve first-layer grip and help with part removal.

Handling requirements

Flexible filament prints best when kept dry. Use a sealed storage bag or dry box with desiccant to reduce moisture-related stringing and surface defects.

FAQ

Frequently asked

What is Sakata Re-Flex-920 filament used for?

Sakata Re-Flex-920 is a flexible TPU filament used for parts that need bendability, impact resistance, and good layer adhesion. Common uses include grips, bumpers, gaskets, protective covers, and vibration-damping parts.

Is Sakata Re-Flex-920 compatible with any 1.75mm 3D printer?

Sakata Re-Flex-920 works with 1.75mm FDM/FFF printers that can handle TPU or other flexible filaments. A direct drive extruder usually gives the most consistent feeding with soft materials.

Can you print flexible TPU filament on a Bowden extruder?

Bowden printers can print TPU when the filament path is tightly constrained and the print speed is reduced. Softer flexible materials generally need more tuning than rigid filaments such as PLA or PETG.

What temperature should I print TPU 1.75mm filament at?

A typical starting range for TPU is 2200245b0C at the nozzle with a 40060b0C bed. Final settings depend on the printer, hotend, cooling, and part geometry.

Do you need an enclosure for flexible TPU filament?

An enclosure is not usually required for TPU. Stable room conditions and dry filament matter more than a heated chamber for most flexible filament printing.

How do you stop stringing with Sakata Re-Flex-920?

Lowering print speed, reducing unnecessary travel moves, and printing with dry filament usually help reduce stringing. Retraction often needs to be more conservative with flexible materials than with PLA.

Does TPU filament absorb moisture?

TPU can absorb moisture from the air over time. If the spool starts producing popping sounds, excess stringing, or rough surfaces, drying the filament before printing can improve results.

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