MK8 Extruder & Hotend cooler
thingiverse
This part guides airflow from the MK8 extruder fan towards the hotend heat sink without directing it to the heater. Heat Sink Disks: The link to purchase 5 aluminum heat sink disks with M6 threads and a diameter of 30mm for use in E3D printers is available at https://www.aliexpress.com/item/5pcs-Aluminium-heat-sink-thread-M6-cooling-Radiator-pipe-diameter-30mm-for-E3D-3D-printer-parts/32865054017.html. For the final print, I used PETG material. However, PLA can also be used as the fan is always on when the printer is operational and cooling parts never reach high temperatures.
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