3D Printer Filament 1.75mm 3D PLA Pen Filament Refill Pack 20 Different Colors 33ft Per Color in Total 660 Linear Feet No Stuck and Non-toxic Printing Filament for Kids Odorless Refill for 3D Creation

Absolute garbage filaments.Everything about these filament rolls is off.1: Diameter. Not even close to 1.75 +/-. Many measure out to 1.6-1.9mm in diameter. This makes flow rates and over/under extrusion a nightmare. (See picture)2: Filament properties. The purple filament looks purple until it gets heated for extrusion, then it becomes pink. Not great when you want the object to be purple and not pink. (See picture)3: Quality. Multiple rolls of filament, especially the "metallic" like ones (silver&bronze) are extremely brittle and break when unrolled. Extremely difficult and sometimes useless to print with. (See pictures)4: Quality control. 33 feet of each filament? Good luck. Some make it to 33 feet, while others, namely the blue and orange, stopped at 23 and 26 feet respectively. This is really not awesome when it runs out of filament mid print or mid-project, leaving you with a useless part.5: Advertising/Quality control. I got 2 identical whites, 2 identical greens, 2 identical blues. Both are the exact same color before and after heating/extrusion. So frustrating.6: MORE quality control. These rolls came highly tangled and extremely difficult to unroll. This is an issue if you're planning on printing with them. It's also a major issue for the brittle filaments as they just break into little useless pieces.7: EVEN MORE quality control. I counted 3 packages of all the filament rolls that were actually sealed with a vacuum, the rest were just bagged. This does nothing for the already poor quality of these filaments.Summary: I wanted a variety of colors without buying big rolls from the trusted brands. That was a mistake. Any one of the 7 major faults with this filament is frustrating but understandable and workable, but all together they are essentially useless.You're taking a major risk trying these filaments. I'd advise looking elsewhere.

Compared to the other 3D pen refills being sold, this pack is the best bargain. For $10 it comes out to 50 cents per color at 33 feet each. The filament is glossy and prints easy like Hatchbox, best at even lower temps than that. Nice for projects where you need accent color options but don't need full 2 lb rolls of them laying around. Colors are bright and look high quality. Not all the colors advertised came though, browns were swapped with other shades of purple and green, and they threw in a white with confetti in it, not too bad. Overall you get plenty of filament for $10

I bought this filament because another Amazon user suggested it prints as easy as Hatchbox, however the consistency of the filament is way different.I started off with some of the red, which while being much harder than Hatchbox did print well. However, my next part was dark gray, and after proving out the printer program in some Hatchbox I went on to the dark gray from this assortment, but the prints were failing quite badly. I ended up having to make some adjustments to make it work, but in the end I was able to make decent prints with it too.

I specifically ordered this set because it showed a light and dark brown which was what my son needed. There were NO browns at all and it did not come with the colors it showed. VERY disappointed

My husband loves this quality. It always comes packaged neat and has never come tangled (like some other companies). Good quality and one of the best deals!

Filament works well! Usu g it to make tactile illustrations for students who are blind/visually impaired and or severely cognitively impaired to help the better understand books. Am very happy with the amount and variety of filament colors!

Works great wish there was more black and white

Works as expected. Nice variety