TRONXY PETG Filament 1.75mm,Metal-Purple-Orchid 3D Printer Filament Accuracy +/- 0.05mm, 1KG Spool (2.2 LBS) for 3D Printers

I am not new to 3d printing, but i am new to TPU. i have had a Monoprice Select Mini 3d printer for about 2 years and recently added a Tronxy X5SA-400 printer. Despite all my printing i had never tackled TPU. i have been told that it is next to impossible to print TPU on a bowden type printer, which my first printer was. after i installed my new printer i thought i would try my hand at it. i loved my new Tronxy printer so i decided to give their filament a try. the price was right, and i wanted to print several cosplay items for my daughter.the filament ships quickly from amazon, and comes in the standard sealed filament pouch. i opened it up and checked it out. TPU is different than anything i have used before. the filament feels more like a rubber band then a piece of plastic. my printer has a titan geared extruder with a 630mm bowden tube and i thought loading it in to the titan was going to be a nightmare, but it was surprisingly easy, easier then i find most PLA's. i figure it is because it is flexible that it goes where the extruder wants instead of where it wants. i loaded the filament and extruded a bit. at my nozzle temp of 230 it came right out no issue. unfortunately with a little retraction, it kept oozing out. as discovered, this is the nature of TPU. retraction is almost useless, and does more harm then good most of the time.after some reading about printing flexible filaments, i found they needed to be printed slowly. <30mm/s. cooling can help with stringing and oozing, but wont fix it. turn retraction off, make speedy travel moves. i sliced my file up accordingly and set it to print. my favorite surface to print on is Kapton tape and i have coated my bed with it. i give it a light spray of aquanet hair spray, but i find that filaments just stick to it. it was no different with this TPU. it had excellent bed adhesion. as it printed i did find a lot of stringing. speedy travel moves helped a bit, but there was a lot of post processing needed. the processing was simple, i used some wire snips to clip the strings. but in the end i was very happy with my results.on subsequent prints i found that temperature control is very important. the tronxy tpu seemed to print just fine in the 205 degree range, with plenty of layer adhesion. tho it is important that you have a heated bed. one of my sliced files allowed my bed to drop to 35 degrees and the print pealed right off. i suggest you print a temperature tower or other files that help you tune filament settings as it will help you find a sweet spot .all in all the filament gets an A rating from me. i will definitely be getting more flexibles in the future , and the tronxy TPU seems very high quality. just follow some simple techniques and your prints will be just as good.

I don't often write review, but I thought this one was deserved. First off, I had high expectations for Tronxy Glow Rainbow filament. It was specifically recommended to me by an avid 3d printing enthusiast. However, I have now tried this filament in both by Prusa and my Sovol printers and neither could complete a print. I have tried several times, at various temperatures, and the filament "appears" to be getting jammed.I say "appears" because its not really getting jammed. What is actually happening is the direct drive is failing to be able to advance to the filament because the filament is too soft at room temperature. I know this is the case because during one of the failed prints (the print head was still moving but no filament was coming out), I stopped the print but kept the temperature at 205. I then disengaged the direct drive and was easily able to force the filament through manually. There was no "clog". Another reviewer noticed this same behavior.During another failed print I pulled the filament and you can see where the direct drive gear ate into the filament, happily spinning but failing to advance the filament.I was really disappointed in the results, especially given the price of this filament. I generally pay $20 -$25 a roll for most filaments. This filament was ~$35 and failed to produce any meaningful results. Very disappointed.Update: After drying the filament for 10 hours (note: the filament was new, so it should not have needed to be dried), I was able to get 1 successful print. The next 2 prints have failed. Still trying to piece this together.

The media could not be loaded. Get ready to print like you have never printed before! This filament has been the best PVA I have tried in a long time. I have struggled in the past with other brands of PVA. I have had issues with stringing, and adhesion to the bed, along with bonding to itself, BUT not with this filament. I literally took this filament out of the package, and stuck it in my printer and hit print. I am impressed at how easily this filament flows out of the nozzle with no clogging issues. I did not experience any stringing even at higher temperatures. The adhesion the the bed is perfect. The layer bonding is perfect, and best of all, the PVA filament dissolves quickly in warm moving water. for best results, I would suggest getting a large tub, fill it with warm water and put the tub on your build plate. turn your bed temp to 30-40c and run a gcode moving your bed back and forth smoothy, slightly agitating the water while keeping it warm.filament diameter is 1.75mm consistent with a dimensional accuracy of + / - 0.02 mm. I was surprised to see that this filament is packaged professionally, within a sealed bag with desiccant pouches.complex models and mobile constructions that no longer need to be assembled from individual parts. Simply wash away the support structure by immersing the model in water.The recommended temperature for printing is 230-240c. I Printed my test model at 235c which cam out perfect.Tip for storage: If you plan on not printing with this filament for a long period of time, you should seal it up in a bag to keep it free from moisture. If you need to dry the filament, do so at 50-55c for 6-8 hours.I really enjoyed using this filament, and I will be happy to purchase more in the near future :-)