Most useful for those who have transitioned to the Olsson block or regularly change nozzles.I wanted ducts that were compact, allow for easy access to the hot end, and allow for some cooling when required. I don't regularly run my fans so extreme cooling is not a priority for me, although I'm sure these ducts should be more than adequate for most hobbyists. I've included single files and a print all in one STL. The only hardware you should have to source are 4 M3x8mm screws. The hanging points have been thickened for added support and avoid cracking as most printed fan ducts do. For the mounting of my fans I only used 2 screws and that's more than enough to keep them firmly in place.This design is currently a Work In Progress.