Prusa i3 Mk3 Part Cooling Fan Duct - Simplified

thingiverse

I was disappointed with the "stock" Prusa cooling fan duct because it blocked my view of the nozzle, but otherwise worked well. I wanted the simplest, smallest, bolt-on replacement I could come up with (no relocating fan, no drilling holes, no hardware changes, etc). After several iterations, I settled on the design here. It seems to flow just as much air as the "stock" duct and my prints turn out almost exactly the same, regardless of orientation. I can now see the nozzle and make adjustments as necessary during printing.