Ender 2 4020 Part Cooling Fan Shroud
thingiverse
Fan shroud for 12vdc blower fan fits directly on to Ender 3 original hot end cover with M2x20mm cap head screws and M2 washers, cable had to be extended (soldered length of 2core servo cable insulated with heat shrink and fed into braided sleeve), plug connector into KFAN slot and activate in slicer, sits about 1.5mm above nozzle tip, prints in 0.2 and 0.1 layer heights without supports or raft or part cooling in about 2 hours, used Sunlu Carbon Black 1.75 PLA at 213 hotend temperature and glass bed at 80 degrees Celsius with a print speed of 40mm/s.
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