Transition "Mystery" Color CoexFlex™ 60A TPU
CoexFlex™ 60A TPU is, by far, the most flexible filament on the market. At Shore 60A, it is much softer than Ninjaflex or Filaflex, feels like a rubber band, and produces finished parts that are completely flexible no matter what infill density you use. Highly functional for applications that require stretch, flexibility, or compliance. (NOTE: Only printable with select printers capable of printing this durometer of filament. A direct drive extruder is required. If you are unsure if your printer can print this material, please contact us prior to purchase!)
Note: These are not a rainbow filament. The color change in each spool will vary and be very gradual.
Benefits of CoexFlex™ 60A TPU
- Excellent layer adhesion
- Incredible flexibility and elasticity
- Great durability
Uses
- Soft handles and grips
- Protective cases and skins
- Custom-shaped seals and gaskets
- Soft and flexible functional parts
Recommended print settings
- Hotend Temperature: 205°C – 215°C (DO NOT approach or exceed the material breakdown temperature of 230°C)
- Bed Temperature: Bed heating not recommended.
- Recommended build surfaces/adhesives:
- BuildTak
- PEI
- Kapton Tape
- Hairspray
- Magigoo Flex
- Magigoo
- Painter’s Tape
- Print speed – up to 40mm/s. Start very slow (20mm/s) and work up from there. Slow down for bridging and infill.
- Extrusion multiplier – up to 1.25 compared to rigid material, depending on extruder tension
- Extrusion width – 105% of nozzle diameter (0.42 for a 0.4mm nozzle)
- Part cooling fan recommended
Technical Printing Guide - COEXFLEX 60A
1. Material Notes
- Keep filament dry - store properly and dry before use
- If needed, dry at 55°C for 4 hours or more
- Preferably use direct drive extruder
- Print multiple parts sequentially to minimize stringing
- Use maximum travel speed to minimize stringing
2. Temperature Settings
Bed Temperature:
- Small parts: No heating (room temperature)
- Large parts: 40-45°C
Extruder Temperature: 205-225°C
- Due to thermal breakdown of the material, do not exceed 230°C
3. Basic Parameters
Unlike rigid filaments, TPU stretches when extruded, producing thinner lines. The line width will be smaller than the nozzle diameter. To ensure proper bonding between vertical walls and perimeters
| Nozzle | Layer Height | Line Width | Volumetric Speed | Temperature |
| 0.4mm | 0.2mm | 0.34mm | 2.0 mm³/s | 225°C |
| 0.6mm | 0.3mm | 0.54mm | 4.5 mm³/s | 225°C |
| 0.8mm | 0.4mm | 0.74mm | 8.0 mm³/s | 225°C |
| 1.0mm | 0.5mm | 0.94mm | 12.5 mm³/s | 225°C |
4. Speed Settings
0.4mm Nozzle (Volumetric Speed: 2.0 mm³/s)
| Line Type | Percentage | Speed |
| External Perimeter | 50% | 15.15 mm/s |
| Internal Perimeters | 75% | 22.73 mm/s |
| Infill | 100% | 30.30 mm/s |
| Top/Bottom | 60% | 18.18 mm/s |
| First Layer | 30% | 9.09 mm/s |
0.6mm Nozzle (Volumetric Speed: 4.5 mm³/s)
| Line Type | Percentage | Speed |
| External Perimeter | 50% | 14.15 mm/s |
| Internal Perimeters | 75% | 21.23 mm/s |
| Infill | 100% | 28.30 mm/s |
| Top/Bottom | 60% | 16.98 mm/s |
| First Layer | 30% | 8.49 mm/s |
0.8mm Nozzle (Volumetric Speed: 8.0 mm³/s)
| Line Type | Percentage | Speed |
| External Perimeter | 50% | 13.70 mm/s |
| Internal Perimeters | 75% | 20.55 mm/s |
| Infill | 100% | 27.40 mm/s |
| Top/Bottom | 60% | 16.44 mm/s |
| First Layer | 30% | 8.22 mm/s |
1.0mm Nozzle (Volumetric Speed: 12.5 mm³/s)
| Line Type | Percentage | Speed |
| External Perimeter | 50% | 13.44 mm/s |
| Internal Perimeters | 75% | 20.16 mm/s |
| Infill | 100% | 26.88 mm/s |
| Top/Bottom | 60% | 16.13 mm/s |
| First Layer | 30% | 8.06 mm/s |
5. Retraction Settings
IMPORTANT: Set travel speed to the maximum your machine allows (200-500mm/s). Faster movements reduce filament oozing time, minimizing stringing.
| Nozzle | Distance | Speed | Z-Hop |
| 0.4mm | 1.5-2.0mm | 30mm/s | 0.2mm |
| 0.6mm | 1.5-2.5mm | 30mm/s | 0.2mm |
| 0.8mm | 2.0-3.5mm | 30mm/s | 0.2mm |
| 1.0mm | 2.0-3.5mm | 30mm/s | 0.2mm |
6. Cooling Settings
Cooling Configuration:
- General: 0% (fan off)
- Force fan speed for overhangs and bridges: OFF
- Layers < 10 seconds: 40% fan
- First layer: 0%
7. Troubleshooting Guide
| Problem | Solution |
| Irregular extrusion |
1. Dry the filament 2. Check extruder 3. Reduce speed |
| Poor adhesion |
1. Dry the filament 2. Use adhesive 3. Adjust first layer |
| Stringing |
1. Dry the filament 2. Adjust retraction 3. Increase travel speed 4. Check temperature |
PLEASE NOTE: These printing parameters are initial recommendations based on our experience. They may need adjustment depending on your specific 3D printer, environmental conditions, and the geometry of the part you are printing. Use these settings as a starting point and fine-tune them according to your specific needs.