Fan power supply and control.

The device powers and switches the fan in the "xBuddy" board cover

https://www.printables.com/cs/model/856236-mk4-xbuddybox-cover

Digital panel thermostat DC12V -50-110°C W1209WK

DC/DC step-down converter module 1.25-30V/5A, XL4015

Insert M3 x 5.7 - 4 pieces

Screw M3 x 6 - countersunk head 4 pieces

IMBUS screw M3 x 6 with nut 2 + 2 pieces

Plech 0,5 x 20 x 85

Self-adhesive heat conductive film or paste

DC connector 5.5/2.5 male, female

DC 24 V power supply (taken from printer LED lighting)

PLA

Nozzle - 0.4 

Layer - 0.2

Fill 15%