Fan Nozzle

This is my totally new development. Design is extremely simple but very effective. It is intended to be mounted on the small fan to cool the product. If necessary, you can easily detach the bracket and remove the nozzle. The nozzle is extremely efficient. When I mounted on my 3d printer, I had to reduce the fan speed to 50%. Otherwise, the extruder can not maintain the set temperature.
I recommend that you print it as on the first picture.