Improved fan duct for Creality CR-10

thingiverse

Improved fan duct and part cooling fan mount for the Creality CR-10. This design should work seamlessly with the stock fans and screws, requiring no additional hardware and minimal modifications to the cabling. The hot end can remain in its original position without any adjustments needed. I was experiencing frequent failed prints due to clogging in the hotend caused by inadequate cooling. The stock fan duct's design is far from optimal but works well with the powerful stock fan, whereas a Noctua fan with lower air flow does not perform as expected. The primary issue lies in the significant air leaks at the bottom of the stock duct. This innovative design forces almost all the air to flow directly across the hot end, directing the exhaust in a way that minimizes losses by creating a large channel after the cooling fins. There is adequate clearance and a moderate cooling air flow around the hotend and the fan duct to ensure the plastic fan duct does not overheat. The part cooling fan is mounted on the sloped end and directs the cooling airflow directly towards the nozzle. The cooling process works surprisingly well without any extra ducts, but I have included a separate part cooling duct that enhances print quality. Despite its massive appearance, with 3 perimeters and 10% infill, this fan duct weighs less than half of the stock metal duct. I mounted the fans by screwing directly into the printed holes, requiring no drills or taps. (Results may vary.) I acknowledge that this design is fairly straightforward and lacks the excitement of various fang models or lightweight variants, but it works efficiently and effectively, which was my primary design goal. EDIT: Added a part cooling duct to the files. It's also a separate entity with instructions available on Thingiverse: https://www.thingiverse.com/thing:3276802