This model was easy to print and I'm sure other's have used it successfully. However, I encountered a couple of concerning areas and decided to use another splitter. First, the threading is undersized and it is very difficult to thread in the PTFE connectors. While you can force them in, it would not be difficult to crack the print and the additional stress seems unnecessary. Second, when using a piece of filament to test the splitter, I could feel ridges/artifacts in the filament track, which caused concern about proper feeding. Finally, filament was unable to successfully feed from the right side, at least initially. The filament felt like it was getting caught (on a 'corner' or something) and could not progress past the Y junction. While I was able to force the filament through, I had zero confidence the splitter would function correctly and I was worried about improper feeding/jams. Fortunately, @D V D has a superior model, which is buttery smooth and functions flawlessly. Again, I'm sure people have successfully used this model and have no complaints, I'd suggest spending a couple coins on the @D V D model, instead, especially if you want piece of mind.