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Ninjaflex at last!

Posted: Tue Nov 28, 2017 12:47 am
by jetdillo
I got my Bondtech Dual installed and finished up(plus replaced a few other parts) over the recent holiday and am happy to show off my first successful Ninjaflex print!

I got the xyz_calibration_cube to print successfully using 20-25mm/sec on just about everything, 95% extrusion with 90% feed rate(set under "Tune" in the front panel. There are a few dribbles, but overall I'm impressed as a first successful print with such a useful-but-very-tricky material. Onward to robot tires! :)

0.2mm layer w/ 10% infill.
nozzle temp: 230C
Bed temp: 60C
Ninjaflex spool suspended from an overhead reel-holder.


Re: Ninjaflex at last!

Posted: Tue Nov 28, 2017 2:29 pm
by Casale8

Any concerns with venting needed for this material?

Re: Ninjaflex at last!

Posted: Tue Nov 28, 2017 3:03 pm
by Jetguy
No, TPU in general is not considered a smelly or fume generating filament. ... 24392.html
Materials list.jpg

Also, another good spot with material comparisons and details. ... nt-compare

And this one has the best description of various flexible filament versions ... -filament/
As the name implies, thermoplastic elastomers (TPE) are essentially plastics with rubber-like qualities, making them extremely flexible and durable. As such, TPE is commonly found in automotive parts, household appliances, and medical supplies.

In reality, TPE is a broad class of copolymers (and polymer mixtures), but it is nonetheless used to label many commercially available 3D printer filaments. Soft and stretchable, these filaments can withstand punishment that neither ABS nor PLA can tolerate. On the other hand, printing is not always easy, as TPE can be difficult to extrude.

Thermoplastic polyurethane (TPU) is a particular variety of TPE, and is itself a popular 3D printer filament. Compared to generic TPE, TPU is slightly more rigid – making it easier to print. It’s also a little more durable and can better retain its elasticity in the cold.

Thermoplastic copolyester (TPC) is another variety of TPE, though not as commonly used as TPU. Similar in most respects to TPE, TPC’s main advantage is its higher resistance to chemical and UV exposure, as well to heat (up to 150°C).

3D Printer Filament Properties: TPE, TPU, TPC (Flexible)

Strength: Medium | Flexibility: Very High | Durability: Very High
Difficulty to use: Medium (TPE, TPC); Low (TPU)
Print temperature: 210°C – 230°C
Print bed temperature: 30°C – 60°C (but not needed)
Shrinkage/warping: Minimal
Soluble: No
Food safety: Not food safe

Last, always look up the manufacturer's data so since this is Ninjaflex "brand"
For reference to the above info, Ninjaflex is of the TPU class of flexible material.

Re: Ninjaflex at last!

Posted: Tue Nov 28, 2017 3:24 pm
by Casale8

Re: Ninjaflex at last!

Posted: Tue Nov 28, 2017 9:59 pm
by jetdillo
Casale8 wrote:Neat.

Any concerns with venting needed for this material?

I did not smell any volatiles coming off the printer, certainly not in comparison to something like ABS.