Prusa i3 Mk3 Part Cooling Fan Duct - Simplified
thingiverse
I was let down by the standard Prusa cooling fan duct because it obstructed my view of the nozzle, yet performed well overall. I sought a straightforward, compact, bolt-on replacement that wouldn't require relocating the fan, drilling holes, or altering hardware in any way. After several refinements, I landed on this design. It appears to circulate just as much air as the standard duct and my prints turn out almost identical, regardless of orientation. Now, I can clearly see the nozzle and make necessary adjustments during printing.
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