Prusa MK3 R3 Taller Print Fan Ducts

thingiverse

I recently bought a tungsten nozzle from Midwest Tungsten for my MK3 and noticed its quite a bit longer than the e3d stock nozzle. As a result the part cooling fan is blowing air on the nozzle which can reduce thermal performance. So I remixed the stock design into two simple fan ducts which are 3mm and 2mm taller. The one in the pictures is 3mm taller but you can use the 2mm one if it seems too close to the bed. Two smaller amendments to the design are an extended attachment hole for the fan to reduce air gaps and I reinforced the ceiling of the duct which is 2-3 layers thicker so it doesn't get holes like the original design can sometimes. I printed mine in PC but ABS would work as well! PETG would be fine if you only do PLA prints.