I made this for the NeedItMakeIt fan duct contest and it won! It's a lightweight high performance fan duct for the FLSUN T1. This was a first attempt at a fan duct (for a printer that I don't even own lol) so I'm pleased with the results. This does require supports, overall though, an easy print.
Here is a link to the video featuring the duct @15:17 - https://www.youtube.com/watch?v=r2mrQnzen2g
Also https://www.youtube.com/watch?v=89ZJjmjzL30
Check out the whole series while you're at it!
The author marked this model as their own original creation.