Prusa MK2/MK2S/MK2.5/MK3 R3 angled fan nozzle duct remake
thingiverse
I modified the original fan duct from MK3 by reducing the middle two openings to create a slightly smaller entrance on the front. This alteration significantly improved airflow, preventing hotend tip clogging caused by excessive extrusion cooling. By forcing air downward, I ensured the filament cools more evenly across layers rather than directly on the nozzle.
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