My old Emotion-Tech Micro Delta Rework printer has heat issues : layers shift.
It occurs when motor drivers are too hot.
Originally included fan isn't enough (or too dirty).
That's why I designed this basement including a cooling fan.
I choosed this one :
https://fr.rs-online.com/web/p/ventilateurs-axiaux/4577346
You will need 2 M3 screws.
It is printed top-bottom inverted.
Fan flow goes to the printer's electronics.

No

No

250

30