Anycubic 4Max 85mm Circular Fan Duct

Uploaded 2 other designs before, I was using the fang type fan duct and it was working quite well, but because of the fangs I could not use a belt tensioner for the X carriage belt, I also got a silicon nozzle sock and because of that the fan duct was cooling the nozzle to much, did couple PID tunning runs but did not help, besides my X belt start to wear and needed a tensioner, so decided to design a big circular fan duct. After 4 prototypes and testing I ended with this, it has a support so it can "hang" at outer side to the X carriage, otherwise it was hanging on that side after couple hours print. This makes the fan duct hard to put it on but it is doable. Also had to do a lot measuring to get it in the middle of the nozzle and the fan duct crashed in to the X stepper motor bracket, so lowered the duct and it is just going under the bracket till X reach 212mm. Blinded 3 holes after last test to spread the air better, otherwise it was blowing to much air just below the fa