NinjaTek - 3DNF1417505 3DNF14117505 NinjaFlex TPU Filament, 1.75mm, TPE.5kg, Steel (Gray) (Pack of 1)

This is NOT like regular flex TPU. It is MUCH more flexible. You HAVE to make sure your printer is set up to print VERY flexible filament. I have two bowden tube printers and get great results with a simple modification to the extruder feed path. A few mm long piece of bowden tube cut with a 'V' shape at one end is all it takes. Just have to get rid of the small gap between the extruder drive and the bowden tube going to the printer. I just let the short tube float above the drive wheel.I do have to bump up the feed rate to 1.2 and print SLOW... maybe 20mm/s.Nice smooth results on naked glass as it sticks very well to a warm bed. I am using between 50 to 65c bed temp.My only complaints are;very expensive for a 0.5kg roll.for some reason they use a spool that is BIGGER than a standard 1kg. (mostly empty and too big to fit into a 1 gallon zip lock bag. I noticed the few rolls I got never come in a vacuum bag and print perfectly so I assume moisture is not a factor with this.Once you get it dialed in though... prints nice.Understand this is NOT like regular TPU.It is a specialized filament for very specific uses.

The media could not be loaded. I printed this on my prusa i3 mk3s. This was my first filament that wasn’t pla or petg, i found a printing profile online and was able to use it to get pretty good, and flexible results. There are minor imperfections, but those can be fixed with some tweaking. This was the first print with this filament and im pretty happy!

VERY VERY soft. Seems like good quality. Prints easily with my micro swiss direct drive. Printed on unheated garolite bed perfectly. Only complaint is it came unsealed and DEFINITELY needs dried. Lots of popping/fizzing and tiny puffs of steam from it as its printing. Might update again depending on quality when dried.

Fast shipping, great value, as described.

If you have a bowden tube based printer and were able to print other TPUs, be warned that this filament is much softer and more flexible and may jam in your bowden tube. I had to upgrade my Ender 3 with a direct drive mod kit to be able to use this filament, and now it works great.

UPDATE: I just printed a known good part design previously printed in black and even this gray, and after almost 4 hours all four copies are in the trash bin. They looked fine, but are nearly hollow--1.7.5g when they should have been 26g! I took a sample for measuring, and the diameter varied from 1.6 to 1.62mm in my sample, that's an error of -.15mm (8.5%), completely unacceptable! I measured a sample of midnight black and it varied between 1.7 and 1.73mm, so -.05mm error, at the high end of acceptable. I will try compensating in the slicer but if that doesn't work this is going back. WTH NinjaTek?! I love the black version of this product, but am very frustrated using the Steel Gray version. It *can* look really great like the black--the glossy sheen--coupled of course with the wonderful 85A shore hardness that nobody else has. But I can take the same GCODE and switch back and forth between black and gray--both dried--and the gray will have issues and I'm throwing away parts. I just finished my second spool ordered at different times, it's the product, not me. I am making parts to sell, and sometimes they need to be gray. So, this really sucks. I can change the settings to get the gray to print: slow down in general, especially perimeters; increase temperature; increase flow. This changes the result (heavier), but *sort of* works. The yield is poor, about 67% (holes and blobs on outside perimeters), but that's better than the 0% (terrible layer bonding, the shell peels apart from the core) I get if I don't change the settings compared to black.As always, adding insult to overpriced injury, this arrogant irresponsible company refuses to ship the spools in a plastic bag, so it arrives water saturated and you can't use it until you dry it overnight. Competitors--why aren't you listening to the chorus of these complaints--please someone else compete with this company and produce a 85A hardness TPU/TPE!

Making a Covid-19 mask

awesome to be able to print a flexible tpu like this. prints almost as well as PLA even at 120mm/s on my ender 5 with bmg clone in direct drive and all metal hot end. some stringing and poor layer bonding, which i think can be resolved with better nozzle and print settings on my part. good luck thinking of what else to print with this material besides phone cases and gaskets...

Il prodotto mi sembra eccellente. Ho già eseguito diverse stampe con una Anet A8 (quindi non certo il "top" delle stampanti 3D) e sono andate tutte a buon fine senza intoppi (a parte la difficoltà iniziale di infilare il filamento nell'estrusore...).Mi ha sorpreso però la confezione: estremamente povera, troppo povera direi.Non c'era nemmeno una busta di sottovuoto a proteggere la bobina. Solo un leggerissimo film di cellophane esterno alla scatola, peraltro un po' lacerato (quindi proteggeva quasi niente). Il che, per un prodotto che teme così tanto l'umidità come il TPU è a mio avviso inopportuno, se non addirittura inaccettabile.Inoltre, sia la confezione di cartone che il rocchetto su cui è avvolto il filamento sono molto "spartani", in materiale poco rifinito, più simile a un sottoprodotto d'imitazione, che a un prodotto di marca come questo.Però, ripeto, la qualità della stampa è molto buona