I recently bough the k1 toolhead blower to replace my ender 3 V3 blower, which is fantastic. I saw the tiny fan that the hotend and I thought, “Why not use the replaced toolhead fan?” and voila, new fan for the hotend. In the electrical part is just plug and play, no modification. The toolhead needs a little modification as seen in the pictures:
NOTE: The toolhead and the base for the fan are two separated pieces but you can make a whole piece for the toolhead, The toolhead is not my design, use the link for the STL)
Toolhead STL
I also made another modification to the screen since the printer is sideways, I need a way to view the screen clearly. I added a 40 pin extender to the screen and a base, the base is not a good looking base since it was a prototype but it held on, maybe I will replace it with a better looking one.
The 40 pin extender I used is the following:
40 Pin Extender