YOUSU Flexible TPU 3D Printer Filament， White TPU Filament 1.75mm 1kg, Dimensional Accuracy +/- 0.03 mm, 95A Shore Hardness and Good Layer bonding Performance.

This filament prints very well for polypropylene. The filament size is consistent, it extrudes easier, and it seems to adhere better than your usual roll of PP. They even provide a handful of sheets that you can stick to your build plate, which is likely a film also made from polypropylene. And no, you don't have to worry about the adhesive having a death grip or leaving behind tacky residue. I just want to make it's clear that this filament is pretty high quality, but there are some things that you should know about it first.Since you are also likely looking specifically for polypropylene, which is a pretty uncommon printer filament, I would assume you are also chasing after its unique resilient properties. Let me quell some of your concern and give you the details so you know what you're buying.Full transparency: I bought this roll of filament because my usual source of polypropylene was out of stock. Getting your hands on 1.75mm PP filament right now seems to leave you with very few choices. Usually all you can find is expensive international options or expensive gimmicky rolls with some sort of color or filler like carbon fiber.The bright white color of this polypropylene is a red flag since it is usually quite translucent. The full 1kg roll is also a concern since polypropylene is usually only sold in 0.7kg quantities. This has to do with the density of polypropylene being much lighter than PLA or ABS.After doing a print, I did indeed confirm this filament is denser than pure, raw polypropylene by about 13%, something that was not made clear in the listing at the time. Let me be clear, this is still lighter than PLA. I talked with the manufacturers about this since the part I printed was obviously heavier than a part printed with pure PP, and they were very helpful and patient with me.I was informed that, yes, this polypropylene is heavier than pure PP because of some of the additives. These additives are used to help the filament in all the ways I mentioned before, namely extrusion and bed adhesion. According to what they told me, this filament still retains the toughness, chemical resistance, and similar rigidity to pure polypropylene. I can attest that yes, the toughness and rigidity is very similar, but I am unsure about the chemical resistance. And even though they, and many other PP distributors say these material is food safe, I wouldn't EVER drink or eat off of a mystery plastic unless it's been through some kind of legitimate certification process, which I don't think exists for printer filament.One last note, this polypropylene also has the same layer adhesion just like pure PP, you just need to make sure you're printing at a high enough temperature to get those layers to really stick together. If you've never printed with PP before, the layer adhesion strength is amazing. It's almost like the part is completely homogeneous. Layer separation is quite difficult if not impossible to even forcefully induce in some cases. It'll be much stronger than PLA or ABS in this way. Maybe better than any other readily made printer filament.So in short, here's the pros and cons.Pros:-Actually consistent filament diameter. A lot of manufacturers say this but don't deliver. These rolls are actually good.-Slightly better bed adhesion than raw polypropylene (use their film or PP packing tape).-Better extrusion characteristics (didn't need to adjust or crank flow rate as much for a good print).-Comes with bed adhesion films so you don't have to hunt down tape or buy expensive adhesive.Neutral:-Denser than raw PP by 13~%, but take that number with a small grain of salt.-Opaque white color-Unknown additives that result in the above property changes.-Sweet print smell.Cons:-No obvious cons.Any of the neutral points could be considered cons, and for me, the extra density of the filament WAS a con, but it completely depends on what you need the filament for. If you do your due diligence and are looking at this review or others, you'll know more or less what you're getting, and how different this stuff will be from pure polypropylene.

Work's great for my applications and equipment. Keep the dry or dry it before use as the moisture has several adverse reactions.Otherwise it is perfect and works amazing!

My first time printing with flexible TPU. My roll arrived well sealed and did not require drying as some other brands have. I am using it on an Artillery Sidewinder X2 and the prints are great with a 0.6mm nozzle size. Nothing really much different needed (temps) in the Cura settings and 60 deg C on the X2 glass bed gives good adhesion. I have zero ruined prints in 2 weeks of printing with this filament.

It prints easy and is just right on firmness .

Better off shredding the cash. Didn’t even bond to itself. And note to vendors… the sample should be on any kind of roll with the brand and info, not a twisted ball. Quit being cheap! It should be a loss leader to impress and that defines your company. Oh or maybe it does…

This filament does as intended. I should have done more research before buying this though. I needed more rigidity but I was only looking at the density of the material. This filament is definitely flexible but also pretty strong. I was really amazed by the quality as well. The only thing I have an issue with was my own problem. I needed a filament that could be rigid and light. Like ABS. I will definitely keep this filament to see if I can make some cool stuff with it.

This was my first go round with TPU and I must say it was easier to work with than I thought it would be. The material arrived well packaged and vacuum sealed. Ran a temp tower and dialed in my Temps and now I have used a half kg having fun!

I use my 3D printer to create functional parts, not really into printing models or toys. I've found TPU to be really helpful for many uses. I've tried a few different types of TPU in the past and decided to try out Yousu TPU for the first time. It's comparable to other brands that I've used and works well.Yousu ships their filament in a resealable bag which is a nice bonus, and in addition to that, they provide a 0.4mm nozzle, although it's an MK8 style nozzle and I use E3D style nozzles at the moment.I'm using this with a printer that has a Bowden tube and have found best results printing slow at about 36mm/s and with a temperature of 220 degrees.So far, I designed and printed some protective feet for an outdoor hammock. The metal bars were scratching up the paint on the floor so I came up with an idea to protect that. I also designed and printed a replacement gas tank spout cover.There are many uses for TPU and I have found Yousu TPU to work well and have been happy with it, and also like the price compared to others.