YousuPolypropylene PP Filament, 1.75mm 3D Printer Filament for 3D Printing, 1kg(2.2lbs) 5pcs Build Sheet Included, Semi-Flexible Ultra Tough Filament, Black

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.

I was pleasantly surprised by this TPU. It feeds very easily, minimal stringing, and excellent layer adhesion. A nice glossy finish, and breaks away from supports easily. Filament is wound neatly, and I've had no issues with any tangles.This is my new go-to TPU brand after a few less than stellar experiences with other brands. Highly recommended!

When I did my initial print this pvb seemed overly stiff and kept wanting to jump off the roll and stringing was unexpectedly bad but thin. Other than that, it seemed to print well with smooth, even walls but it eventually jammed. This hasn’t happened to me in many months over many printers and material types. Upon reading other reviews, it seemed like the filament might just be wet. I picked up the sunlu S2 upgraded model recently, so I dried it at 55c for 12 hours. This improved flexibility and eliminated stringing entirely. However, after a few smaller prints (~15 meters), I decided to trust it again and left it going on a larger print. When I returned it had jammed again, this time in a way I have not previously seen. The filament on the roll appears to be fused together to a degree severe enough to prevent it from unspooling. It can be forced apart but is brittle enough that it breaks easily. I don’t know if this is due to the 55c drying or if the deeper layers were always this way, or if perhaps the drying process was too short and didn’t make it to the deeper layers. In any case, I won’t be buying any more filament from these guys. I’ll try drying it a bit cooler and for 48hr for fun but I don’t anticipate reviving it. Unfortunate, because it appeared very professionally made and after drying, the print quality was very nice.

Edit - Ordered for a second time. Still pleased with this filament. You will require a filament dryer and some sort of dry box. Out of the bag it was pop rocks out the nozzle. After 2 hours in the dryer it was flawless. If this is not exiting the nozzle looking smooth it is too damp. Damp it will look chunky leaving the nozzle.I consider the moisture a common with this type of filament. Previous roll was stable to the end after one run in the dryer. It stayed on the machine in open air for a week during that.First I must add that my machine is perfectly calibrated. The E axis was done right before running this filament and was run again after the first and only jam.This was my first run with a poly smooth filament. This filament is very stiff and wants to jump off the spool; use caution. First run this jammed up my extruder so badly I had to drill it out. This is most likely my own error. This filament was very brittle. I had to warm the reel up to get it to relax. No heater box, just overhead lamp next to the reel.It did take me awhile to find the right settings. This prints nothing like regular PLA or PLA+. I was surprised to find the best print temp was around 188C with a brass .4 nozzle. Temps over 205C will result in heavy foaming and stringing. Expands like mad at this temp and sounds like cooking bacon. Nope, smells nothing like that. Vapor from this element was minimal even in a small office. At 205C It just turns into a mess and threatens to turn into a heat creep jam no matter how fast you jam it through. It starts to behave around 200C but as I stated the best print temp I found was 188C. 200C was still stringy and generally not good. I did notice that if you can hear that hot plastic "kissing" sound you have it too hot.Printer SettingsEnder 3 with direct drive extruder.Printing on heavy glass bedPrint Speed - 60Nozzle - 188CBed - 45CFR - 101%Flow - 98I started with the FR and Flow at 100 but fine tuned to the above settings. These settings gave me satin walls with minimal lines and an 80% glossy on the floors.* I have nothing to say about the smoothing abilities but I will update when I do in the next few days.So far I have to say it was well worth the experiment and I would buy it again.

Yousu was an unknown brand to me but I'm pleasantly surprised by how well this PVB filament prints on my P1S. The print settings are about the same as PLA and it prints just as easily. I was able to print some small test models and smooth them fairly easily using a fine mist continuous spray bottle (~$8 from ali express). Much less of a hassle to smooth than ABS and ASA, given the solvent and direct application.I recommend the use of a vapor smoothing plate to prevent the model from adhering to the underlying surface. If you want to download the one pictured just search for "Vapor Smoothing Plate" on Printables. Also be sure to get a fine mist bottle, the kind used for perfume or hair care products, to avoid splattering and uneven coating on the model. Use a high concentration alcohol such as 99%, applied from about a foot away. I found applying two quick coats a few minutes apart, followed by a 20 min dry, then reapplication provided good results. Go for an even glossy coating of alcohol, but be careful to avoid flooding areas of the model.

hay que conocerlo, experimentar, no recomendado para sistemas bouden (usar 0 retraccion), tiene buena adherencia con cama limpia, y da buenos resultados para impresiones sencillas, no recomendado para mucho detalle, tiene buena adherencia aguanta jalones y deformacion,como dije hay que jugar con el, tengo 2 impresoras diferentes y los ajustes son diferentes, en general si le doy las 5 estrellas.gracias YOUSU, hiciste felices a mis nietos!!

Don't no why but every time the print head moved a string of filament came with it and if you reduced the extruder nothing would extrud or if you try and other setting it would just over kill its self spent 5 hours trying to finded a setting my pla setting would have no resolution and it would just be a out line of putty.. only other possible is its super wet or defective as defective pvb just runs long strings of pvb and ruins the print total disappoint ment alwell this is why you buy returnable filaments so it doesn't end up with a 45 buck pile of waste.. had high hopes as it looked good at first then it hit the down hill super fast

Es un muy buen filamento, lo usé para unos proyectos de mi universidad y tiene muy buena calidad

OK, polypropylene is a git to print. Adhesion is terrible. It warps. For low surface contact prints you need a raft and it fails over 50% of the time. Until now I've been printing the first layer in PLA then filament swaping to PP. PLA adheres to the bed, PP adheres to the layer of PLA.BUT, this sheet that comes with the PP - like a phone protector, peel and stick to the bed. Instructions are written on the sheet. End to 220, bed to 85, slow first layer (I used 15 mm/s) and no fan for layer 1.My prints with quite low contact areas adhere first time. 100% success.I guess this review is more about the included adhesion sheets than the ink. But still. Finally it's easy to print with a chemically resistant plastic.