-550x550.webp "Sakata 3D RE-FLEX 85A black or green recycled flexible filament - 1.75 mm, 1 kg")
-80x80.webp "Sakata 3D RE-FLEX 85A black or green recycled flexible filament - 1.75 mm, 1 kg")
- Stock: 32
- Model: RE-FLEX-85A-SAKATA3D
Type:
FLEX X-920
FLEX X-920 Transition
FLEX X-920 Recycled
RE FLEX 85A
Sakata 3D RE-FLEX-85A is an 85 Shore A flexible filament manufactured in Spain for FDM/FFF 3D printing. Sakata 3D developed it as an alternative to TPU/TPE materials, combining flexibility, impact absorption and comparatively accessible printing.
This version is supplied in green, 1.75 mm diameter and a 1 kg net spool. It is suitable for protectors, bumpers, grips, model tyres, non-critical gaskets, impact-resistant housings, cosplay elements and parts that need to bend. Final elasticity also depends on wall thickness, perimeter count, infill and model geometry.
Flexible, recycled and made in Spain
The official technical data sheet describes RE-FLEX-85A as 100% recycled, biodegradable and partially renewable. These are the manufacturer's declarations about the formulation; they do not mean that a printed part will break down rapidly under normal conditions or may be discarded in any environment.
It should not be treated as generic TPU: Sakata 3D presents it as its own flexible formulation and an alternative to TPU/TPE. Create a dedicated profile and begin with the official settings instead of copying an arbitrary 95A TPU profile.
Technical specifications
| Feature | Official value |
|---|---|
| Brand | Sakata 3D Filaments |
| Manufactured in | Spain |
| Colour | Green |
| Diameter | 1.75 ± 0.03 mm |
| Maximum roundness deviation | 0.03 mm |
| Net weight | 1,000 g |
| Hardness | 85 ± 5 Shore A, ISO 868 |
| Density | 1.23–1.27 g/cm³, ISO 1183 |
| Vicat | 84°C, ISO 306 |
| HDT at 0.45 MPa | 61°C, ISO 75-1 / 75-2 |
Vicat and HDT were measured on 4 mm printed specimens. They are not a guaranteed service temperature for every part: design, load, exposure time and print settings change actual behaviour.
Recommended print settings
| Setting | Sakata 3D starting point | Notes |
|---|---|---|
| Nozzle | 220–245°C | Official reference with a 0.4 mm Brass nozzle. |
| Bed | Below 40°C | Glass or PEI; no additional treatment required as a starting point. |
| Speed | 10–50 mm/s | Start near the lower end and increase after confirming stable feeding. |
| Part cooling | 100% | Adjust initial layers if the surface needs more adhesion. |
| Layer height | 0.2 mm | Technical data sheet reference value. |
| Enclosure | Not required | Maintain suitable general ventilation. |
| Optional drying | 2–4 h at 60°C | It may also be printed from a 60°C dryer when required. |
Because this is an 85A flexible, use a short, closely constrained filament path, limited retraction and enough drive pressure to feed without crushing the material. Direct drive generally makes tuning easier; Bowden systems must prevent the filament from buckling or escaping between the drive gear and tube.
3D printer compatibility
Conditionally compatible with 1.75 mm FDM/FFF printers that reach 220–245°C and have an extruder capable of feeding 85A flexible material. Matching diameter and temperature is not enough: clearance after the drive gears, path length, friction and loading system all matter.
Thanks to their extrusion system, the assembled HPRO-330, HPRO-330 DIY kit and HPRO-400 are particularly favourable options for soft flexible materials. Temperature, flow, retraction and speed must still be tuned for this spool and the specific part.
Storage and drying
Store the spool sealed with desiccant. If printing produces popping, bubbles, a rough surface or irregular extrusion, apply the optional 2–4 hour drying cycle at 60°C. Ensure the dryer holds a stable temperature and that the spool turns without resistance during printing.
Responsible use and limitations
The material is not certified for food contact or medical applications. Belts, wheels, gaskets or parts exposed to load, heat, wear or a safety function require validation of the complete design and testing under actual operating conditions.
For a slightly firmer Sakata 3D flexible with a wider choice of colours and spool sizes, see 89 Shore A Sakata 3D FleX-920.
