"I did not print it yet - I'm still figuring out how to print a fan blades"
Hello there,
there is 85mm fan for 24mm eletric motor that can be found in old gamepads, or simply bought on Aliexpress/ Amazon or somewhere else (<1.5€)
https://www.aliexpress.com/item/1005005102927166.html
It is really tight fit and it is necessary to heat up the motor's shaft to insert a fan on it - I did it, because I was afraid of loosening and disconnecting fan from shaft.
The author marked this model as their own original creation.