Thermoplastic polyurethane (TPU) is a high strength flexible filament. TPU is essentially polyurethane, it belongs to the TPE class of thermoplastics (similar to the stuff NinjaFlex is made of). In addition to being stronger compared to other flexible materials on the market, we found TPU to be easier to print with, with great layer to layer bonding. Let's make our ideas actual!
Material : Rep-Flex TPU - Vacuumed Sealed with desiccant
shore hardness: 95A
Diameter: 1.75mm (+/- 0.05mm)
Roundness: 1.75mm (+/- 0.03mm)
Recommended extruder temperature:195 - 230°C
Recommended platform temperature: 40 - 60°C
Recommended for printers with direct drive extruder, 0.4~0.8mm Nozzles.
With bowden extruder you might pay more attention to these tips:
Print slow 15-30 mm/s Printing speed
First layer settings. (Height 100% Width 150% speed 50% e.g.)
Retraction disabled. This would reduce messy, stringing or oozing printing result.
Increase Multiplier(Optional). set to 1.1 would help the filament bond well.