To improve the cooling system, I designed a custom setup for two 40 mm fans. Assembly is very simple – you only need to attach the air diffuser to the print head at two points. Everything else is just a matter of easy connections.
I'm using a combination of these two fans:
Hotend fan
https://www.aliexpress.com/item/1005003522640375.html?spm=a2g0o.order_list.order_list_main.24.378318021rMbqc
Extruder fan
https://www.aliexpress.com/item/1005007548544972.html?spm=a2g0o.order_list.order_list_main.36.378318021rMbqc
The design was inspired by this model:
https://www.thingiverse.com/thing:4942470
The holder for the level sensor is attached to the right side of the print head body.
The author marked this model as their own original creation.