UPDATE 2021.04.09: I updated the fan shroud to be better, and also added screw holes in the top of the heatsink to secure the hotend better. I updated all the files. Based on Cadmium's original Mosquito adapter (Link below). I had to modify it a bit so it fits the slightly different heat block of the NF-Crazy hotend. More info about the build (in Hungarian) here: https://appsolute.hu/2021/03/e3d-mosquito-hotend-atalakitas-a-prusa-3d-nyomtatonkban/ Original design: https://hackaday.io/project/167673-extruder-for-prusa-i3-mk3s Comments are welcome.