YOUSU 3D Printer Filament Bundle, Glow in The Dark Filament Multicolor, Green, Blue, Purple and Rainbow, PLA Filament 1.75 mm, Dimensional Accuracy +/- 0.03 mm, 250g X 4 Pack

Pleasantly surprised! Printed some dragons and they look great! Changing the orientation of the print will yield different colors. See video. The yellow comes out more of a gold and the red is more of a magenta. You'll get shades of purple and green as well. Rainbow filament basically. Structurally, same as any other silk filament. As in, more brittle than normal. Pay attention to the geometry that the slicer outputs. With dragons for example, you want your links to be at least 4 lines wide (1.6mm) or the kids will snap the plastic. Bed adhesion is as expected. I have a Ender 3 V2 with a glass bed. Needs gluestick for this filament. Temperature tower showed 200 as the optimum temp. Anything higher and you get whiskers and strings everywhere. The spool I got shows no issues of tangles and color orientation looks consistent throughout (there are windows on the spool) What can you print with this? Mostly larger curvy organic shapes. Large flat surfaces don't look that good as the color gets splotchy. Flat tops and bottoms just look like rainbow noise. Small details as well. The just look grey from farther away. To summarize, with the right model, results are top notch.

I am seriously impressed with this TPU combo pack! The colors (Blue, Green, Yellow, and Purple) are super vibrant in normal light, and the glow-in-the-dark effect is just incredible. I printed a set of gummy bear models to test it out, and they came out looking amazing both in the light and when glowing. The filament feeds smoothly, has great layer adhesion, and is flexible without being too tricky to work with. The glow lasts a surprisingly long time once it’s charged up under light, and each color has its own unique glow effect that really stands out. This pack is a perfect mix of fun and quality—I love having multiple color options in one set. If you’re looking for a TPU that’s flexible, reliable, and also adds some serious wow factor with glow-in-the-dark, this is the one to get. Highly recommend!

This is some pretty good stuff. Shocked me, really. I was able to print a dragon (super clean) and an Igiris figure (about 7 inches tall). I did lose a bit of quality on the Igiris print due to it being a filament and not a resin printer. But still came out amazing considering. I didn't have the stringing or other problems like I have with the Sunlu products.

The purple one doesn't glow to well but the other colors are great. However there not as big as I was hoping.

It behaves like normal TPU... But it glows! I've made a few things with each color, but haven't encountered any clogging. Like with most TPU's, it's easy to use and you can expect some stringing. The consistency is like that of most other TPU's I've used. I love how each color pops in its own way, the purple is as dark as the yellow is bright. The blue is brilliant and the green is nice and fluorescent. After charging with a UV light for a few seconds, you can expect the blue and green to be the brightest, by a mile. The yellow tends to glow dark green and the purple tends to glows dark blue. Overall, the quality is top notch.

I was excited to try out this new glow-in-the-dark TPU from Yousu. I like to make airless balls and fidget pop toys with TPU. Having them glow would be a huge bonus. I printed these on several identical direct drive printers. I ran through my usual temperature tower, flow, and retraction calibration tests to prove what I expected--this printed like most other TPU I have used. I printed at 195 on a cold bed with 1.6 mm retraction distance at 20 mm/s. I kept this in filament driers (with desiccant) and didn't have significant hair issues. As with all TPU, bridging is a little challenging, but all worked fine with my airless balls. The green and yellow colors stand out with a brighter glow. Blue is a little less bright and purple is the faintest of the bunch. They light up well with even a tiny blacklight. As for "charging" them a good UV light or direct sunlight is best. They will pick up some "charge" from bright room light, but not as much. I have been thoroughly pleased with this innovative filament. It's super fun. I expect these to sell quite well at craft shows.

It's not the best filament... the glow don't last long it smells really bad when printing like a strong chemical. It's very brittle! When I opened the filament to put it into my printer the filament broke just by pushing it though... then when I print something like a fidget toy it breaks only after a few uses. Wouldn't recommend this product. Cheap Cheap. Spend a few more dollars & get better quality filament

While I absolutely loved the 3 glitter filaments, I have to leave off a star because I could not use the color shifting roll. The color shifting filament roll that I received was so brittle, it would break just coming off the roll straight to my extruder and I couldn't print with it. However, I am very impressed with the strength and color of the 3 glitter rolls. I've never had a glitter filament to print well for me, but these did great once I tweaked my temps. They are also much stronger than most of the other pla filaments I've used. I love the sparkle and it takes a lot more force to break even small prints, than any of the other pla filaments I have used. While a slightly larger nozzle is recommended, I had no issues printing with a .04 nozzle. It does tend to be a bit stringy but I found it prints pretty well at a lower temp. I printed this little articulated spider on 190. There is still some minor strings but nothing that isn't easily removed. I am hoping to see large rolls of this glitter filament soon.